Please enter your login details below. 110 PCS pistol, 2022 Editors Choice Award Winning Ruger 5.7 LC Carbine, 2022 Editors Choice Award Winning Mossberg 940 Pro Tactical 12-gauge, Fiocchi Introduces New 5.7x28mm Subsonic Ammo, Lehigh Defense 115-gr. Past breakthroughs have brought us the extreme extruded line that gives consistent performance regardless of ambient temperature, and more recently they have brought us CFE technology that deters and reduces copper fouling. Trim to length as needed, clean/uniform the primer pockets, reprime, charge with powder, verify powder charges, seat bullets to specific overall length, perform final inspection, box, and label. Find load data for IMR 4064 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4064 is a medium-range burn speed powder and is one of the most versatile propellant in the IMR line, used for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Super Short Magnum, 308 Winchester, 338 Winchester Magnum, and the list goes on and on. By that, they mean the change per degree from 20 to 65 might be smaller or larger than the change per degree from 65 to 140. . We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. Comprehensive load data for IMR 4166 Enduron reloading powder und technical specifications for this propellant. .223 Remington (Hodgdon Data Using IMR Powder) reloading data with 221 loads. The Hodgdon powder company is world renowned for introducing revolutionary technology to the reloader. imr 4166 for sale .223, .223 loading data imr 4166, .223 rem. Picked up a lb of this stuff to do a little testing with, see if it compares to Varget for accuracy in .223. Choose from a variety of powders for everything from small-caliber ammo to magnum rifle cartridges in both 1 lb canisters and 8 lb jugs. Generally no two rifles will like the same exact load. I've had good luck with 8208 with 77gr SMK's and 69gr Nosler Competition Customs Hoon Rating - 100% 1 0 0 Joined Mar 2, 2013 Messages They also produce specialty rounds designed for competition shooting events like . . If you are the site owner (or you manage this site), please whitelist your IP or if you think this block is an error please open a support ticket and make sure to include the block details (displayed in the box below), so we can assist you in troubleshooting the issue. FPS low 2735 high 2789 IMR states that IMR 4166 is a versatile, match grade propellant. I was planning to switch to 4166 for my .308, but it seems that it has also become nearly impossible to source. Share the post "Cant Find Varget for Sale? Load data for 50 loads in caliber 7 x 57 with .284 | 139gr . _gaq.push(['_trackPageview']); Bullets ranged from 50- 77 grain , same bullets shot very well with Varget anf H4895 . * All prices incl. IMR 4451 had the largest swing in muzzle velocity of the powders tested, but keep in mind just 68 fps over 115 F swing is still a good performance. First load. The test was designed to quantify the temperature stability of Hodgdon H4350 and Varget powders compared to IMRs Enduron line of powders, specifically IMR 4166 and 4451. Sign up to get updates and access to exclusive promotions. $182.75. So, I'd use it for loads listed by Hodgdon. The maxorder quantity of any powder SKU is, https://shop.hodgdon.com/sites/www/files/2022-04/2022-IMR%20Endurons%20SDS.pdf, https://shop.hodgdon.com/sites/www/files/2020-08/sell-sheet-imr-enduron-final.p. $49.99 - $357.99 4.48 17 reviews IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. My factory sierra high 2576 7977 is the slowest of the batch, for shoulder thumpers like the .338 Lapua and the .470 Nitro Express. IMR 7977 is the slowest burn rate Enduron Technology powder. Improved Military Rifle IMR 3031 Improved Military Rifle IMR 4064: 5.56 x 45 mm: Accurate 2495 VihtaVuori N135 VihtaVuori N140: Hodgdon CFE 223 Hodgdon H 335 Improved Military Rifle IMR 8208 XBR VihtaVuori N530 VihtaVuori N540: 5.6 x 50 Magnum: Improved Military Rifle IMR 4064 Winchester 748: 5.6 x 57: Improved Military Rifle IMR 4320: 5.7 x 28 . We need to get back to the good old days! The accuracy results were almost identical to those of Varget, with my best group coming in at 1.05 MOA from a 24.6-grain charge of 4166not bad for an initial round of load development. It is the perfect burn speed for cartridges such as .308 Win, 7.62mm NATO, 22-250 Rem and 257 Roberts. ), AR Issue 2022 Gun & Gear Giveaway Contest, Editors Choice Gun & Gear Giveaway Contest, Fall Hunting 2021 Gear & Giveaway Contest, Defensive Handgun Gun & Gear Giveaway Contest, Defensive Handgun Issue Gun & Gear Giveaway, The Hunter to the Hunted: Savage Arms Introduces New 110 Carbon, Wilson Combat 300 HAMR Barrel Conversion, 2022 Editors Choice Award Winning SIG Sauer P322 .22LR, 2022 Editors Choice Award Winning Savage Mo. Moving on, the individual loads were fired and the barrel was allowed to cool between each group. bolt reload data with 65gr. 4451 is the medium burning powder, for medium cartridges like the .30-06 Springfield and the .270 Winchester. I'm using this in my Tikka CTR 223 under 73 gr Berger BT target bullets. The folks at PrecisionRifleBlog.com meticulously loaded 6.547 Lapua ammo with each powder using some of the best equipment available. IMR 4166 possesses the fastest burn rate in the Enduron lineup. Once they had a couple dozen rounds loaded with each powder, they went and shot them with each powder at 25 F, 65 F, and 140 F. The muzzle velocity of each shot was recorded using both a LabRadar Doppler Radar and a MagnetoSpeed Chronograph. The 223 is the most common round. IMR Legendary Powders now offers four (4) Enduron powders: IMR 4166, IMR 4451, IMR 4955, and IMR 7977. The LabRadar is a new type of device that allows you to measure muzzle velocity within at least +/- 0.1% of the reading. spitzer boat tail & imr 4166, .223 rem. Or maybe have QuickLoad data? Using bullets from Nosler BT LF, Barnes VG FB, Nosler BT, SinterFire, Sierra SP, Speer SP, Sierra HP, Barnes TSX FB, Hornady FMJ, Hornady V-Max, Swift Scirocco, Sierra HPBT, JLK VLD, Sierra MK, Berger BT Targ. This website uses cookies to ensure the best experience possible. Loading density is perfect for the very large magnums, including the 6.5mm and 7mm magnums. So they would likely show much larger swings than what these four top-performing powders showed. bolt reload data with 65 gr. IMR offers a modern line of powders with Enduron Technology which is also marketed to have extreme temperature stability. I paid $159.00 for 8# Varget at Shooters last time I was up there. When will Enduron powders appear on dealers shelves? IMR now offers five (5) Enduron powders: IMR 4166, IMR 4451, IMR 4955, IMR 7977, and IMR 8133. In today's shooting you can clearly see the scatter that centers at 45.5 and the obvious OCW at 46.2. The top shooters in the PRS and veteran long-range shooters in other disciplines have learned to value a temperature-stable powder. Load data should be forthcoming pretty soon. })(); To comment on a post, click Post Title or "Comment" Link. CC 300 BLK ($53.49 per box of 20), Law Tactical Gen 3-M AR Folding Stock Adapter, 2022 Editors Choice Award Winning Silencer Central Banish Backcountry Suppressor. For more information and IMR 4166 LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. Loading density is perfect for magnums, contributing to superb uniformity. of 4166 in Peterson SRP brass topped with 168 gr SMK's seated 0.010" off gave me great performance. When we are sold out, we are sold out. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; [ARCHIVED THREAD] - IMR 4166 .223 Rem. worst groups at .5 moa most groups around the .3 moa mark. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; The new line of IMR Enduron powders feature small kernels for easy metering, plus a built-in copper fouling eliminator. IMR 4166 Enduron Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. If you commonly use Varget, Alliant Reloder 15, Norma 203B, IMR 8208 XBR, or Vihtavuori N140, you might want to try IMR 4166. .225 Win. IMR 7977 has the slowest burn rate among the Enduron Technology powders. Find load data for IMR 4955 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4955 is a versatile, match-grade propellant with a mid-range burn speed that is in between IMR4451 and IMR7977. Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR End. The weight of a kernel of 4166 was almost double the weight of a kernel of H4895, and they were clearly larger. This is a true magnum propellant yielding outstanding performance in .300 Winchester Magnum, 7mm Remington Magnum and .338 Lapua Magnum. Really like this powder, the accuracy it produces is amazing I will lots more if I can find it. IMR 4451 Another new Enduron powder that gives top performance in the venerable .30-06, 270 Winchester, and 300 Winchester Short Magnum, to name just a few. However, Alliants relatively new Reloder 16 is an extremely temp-stable powder, with a burn rate that is a close match to H4350. This powder is comparable to Hodgdon H4350. SUBSCRIBE TO OUR NEWSLETTER TO STAY UP ON THE LATEST. The new powder line-up comes in three flavors: 4166, 4451 and 7977. This allows up to 4% more powder space in the case and in many loads yields more velocity than standard 7828. A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. It is primarily a pistol powder but has some application in rifles. ga.src = ('https:' == document.location.protocol ? For example, IMR 4166 is a good replacement for Hodgdon Varget (commonly used in the .223 Rem, 6mmBR and .308 Win), while IMR 4955 is a fine substitute for H4831 (favored by F-Open shooters for the .284 Win and 7mm WSM cartridges). It is the perfect burn speed for cartridges such as .308 Win, 7.62mm NATO, 22-250 Rem and 257 Roberts. Naturally the next step was to combine the two for a new line of powders. I hope to get to .5 moa consistently anything better will be nice. I hope to get some time on the new bull barrel AR. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. This ensured the powder charges were identical for each round of ammo. IMR 4166 is one of IMRs Enduron family of propellants. I do not see it listed for 40 grain bullets. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. In fact, E. I. duPont arrived in America in 1800 determined to make an improved gunpowder and, by 1802, was producing gunpowder in a new plant along the Brandywine River in Wilmington, Delaware (this plant morphed into what is today the GOEX brand of black powder). Find load data for IMR 4895 propellant by clicking the button "Loads for this Powder".More about this powder:Originally a military powder featured in the 30-06, IMR 4895 is extremely versatile as a medium burn speed propellant. For example, IMR 4166 is a good replacement for Hodgdon Varget (commonly used in the .223 Rem, 6mmBR and .308 Win), while IMR 4955 is a fine substitute for H4831 (favored by F-Open shooters for the .284 Win and 7mm WSM cartridges). Find load data for IMR 4227 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4227 is a medium burn speed, magnum pistol propellant. Choosing 4166, I decided to use it in place of my usual choice of Varget in a known accurate cartridge and rifle combination. Shooter's Reference Load Data for .223 Remington .223 Remington - Published Manufacturer Loading Data Shellholders: Hornady #16 Lee #4 Lyman #26 RCBS #10 Recipe Type: Rifle 55,000 PSI STANDARD SAAMI COMMERCIAL SPECIFICATIONS Pistol CUSTOM LONG THROAT Reduced Load Bullet Weight: ALL 30 gr 34 gr 35 gr 36 gr 40 gr 42 gr 43 gr 45 gr 50 gr 51 gr 52 gr IMRs press release provides these descriptions of the new Enduron propellants: IMR 4166 is the first in the series of Enduron propellants. Reloading 223/ 5.56 for the AR-15 with IMR 4166 30-06JOHN, GUNS AND RELOADING 1.86K subscribers 2.8K views 1 year ago I reload .223/ 5.56 for the AR-15 using a powder not popular, IMR. So if your goal is first-shot hits and you may shoot in a variety of conditions you should care about temperature stable powders. This propellant performs comparably to Hodgdon Varget but charge weights are materially different. This powder is comparable to Hodgdon H4831. VAT (where applicable), shipping costs and possible delivery charges. CL 2.005 Please help us to improve and report any suggestions via our contact form. Be sure to enter theNES/MFS March Giveaway ***Taurus G3c***. Be Alert: Publisher cannot be responsible for errors in published load data. I bought all three. JavaScript is disabled. 5 rounds shot ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. PRBs test team also noticed other interesting trends in the data. forum.accurateshooter.com/threads/imr4166-loads-for-223.4053707/, Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36. They both love it. I have had good luck with 4166 in .223 bolt rifles. Some of our Forum members have reported excellent results with IMR 4166 in cartridges that work with Varget, such as the 6mmBR, 6 Dasher, 6.547 Lapua, and .308 Win. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Good luck. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. In modern type guns, 4166 IMR Enduron Powder is a viable powder. However, due to the super short kernels, metering is virtually as good as a spherical powder. The 6.5 responded well to the precisely weighed powder charges in carefully prepared cases. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. VAT (where applicable), shipping costs and possible delivery charges. OAL 2770 Sierra Case 3, e-mail Hornady and the powder mfg. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. One member wrote: in my 6.547 IMR 4166 gives speeds and accuracy pretty much exactly the same as Varget. And other shooters have observed reduced copper fouling with Enduron series powders, so IMRs Enduron anti-fouling chemistry does seem to work. spitzer boat tail & imr 4166, 223 80 gr bullet imr 4166, 223 load with imr 4166, 243 barnes 80 gr ttsx imr 4166 load data, 243 barnes 80gr ttsx imr 4166 load data, 243 barnes ttsx with imr 4166 load data, 243 barns ttsx with imr 4166 . This propellant performs comparably to Hodgdon H4831 but charge weights are materially different. _gaq.push(['_setDomainName', '.accurateshooter.com']); Find load data for IMR 8208 XBR propellant by clicking the button "Loads for this Powder".More about this powder:IMR 8208 XBR is an accurate-metering, super short-grained extruded rifle powder was designed expressly for match, varmint, and AR sniper cartridges. You are using an out of date browser. IMR 4955 is a medium burn speed powder, falling in between IMR 4451 and IMR 7977 in burn speed. ga.src = ('https:' == document.location.protocol ? Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. Well, Im done Adulting for Today and Tomorrow. IMR 4166 in .223. Really like this powder, the accuracy it produces is amazing I will lots more if I can find it. We do not take backorders and our Tech Services team cannot take orders via email or phone. For example, IMR 4166 is a good replacement for Hodgdon Varget (commonly used in the .223 Rem, 6mmBR and .308 Win), while IMR 4955 is a fine substitute for H4831 (favored by F-Open shooters for the .284 Win and 7mm WSM cartridges). (SEE: Temperature Effects On Zero on KestrelMeters.com.). . IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. Loading density is perfect for magnums, contributing to superb uniformity. The initial heat condition of your powder will affect the burn rate, Bryan Litz explained at a recent Applied Ballistics Seminar. Across the board, the Enduron line is very insensitive to temperature changes, which is important for both match shooters and hunters. In rifles, this powder delivers excellent velocity and accuracy in such cartridges as the 22 Hornet and 221 Fireball. Many F-Open competitors are now using Reloder 16 with considerable success. (function() { 4166 is the fastest burning powder, for cartridges like .223 Remington and .308 Winchester. The technology in IMRs Enduron line of powders provides four very important qualities that enhance both in-gun and downrange performance. The IMR 4166 shows loads for a 69 hpbt. Sounds familiar! These short-grain, extruded powders will deliver temperature insensitive quality while keeping copper residue to a minimum. ALL THE LOAD DATA YOU'LL EVER NEED ALL IN ONE PLACE! It is expected to perform well in the .308 Winchester and in 6mm cartridges running the heavier (95-107gr) projectiles. I'm looking for some load data for the 55gr V-Max in 223 Remington with IMR 4166. It provides top performance in big game cartridges such as 25-06, 280 Remington and 300 Winchester Magnum. Copper fouling should be minimal, allowing shooters to spend more time shooting and less time cleaning a rifle to retain accuracy. Other than that , great job, thanks. Sep 25, 2010 . The IMR Enduron line is similar to Hodgdon's Extreme Extruded line, in that it is temperature insensitive. Trail Boss is based on new technology that allows very-high loading density, good flow through powder measures, stability in severe temperature variation, and, most importantly, additional safety to the handloader. The manual allows for stiffer charges, but at 25.1 the load begins to compress. VISIT THE RDC WHITE HOTS White Hots 50/50 is a 50 Caliber, 50 grain pellet for muzzleloaders. It is formulated to reduce fouling and to be stable across a wide temperature range. I don't see any info for the A-Max though. 5 rounds shot When we are sold out, we are sold out. Today, only the newest reloading fuels can exceed that with a 55-grain bullet in the commercial .22-250. Reduced Rifle Loads. _gaq.push(['_setAccount', 'UA-6323545-2']); 44gr 4166 Most powders arent specially formulated to be temperature stable. Perhaps the new IMR 4166 will be as good or better. For info on other IMR powders, visit www.imrpowder.com. IMRs press release states: IMR 4166 [has] a perfect burn speed for cartridges like the 308 Win/7.62mm NATO, 22-250 Remington and dozens more.. Enduron powders are formulated to reduce fouling and to be stable across a wide temperature range. IMR 4451 is a mid-range burn speed powder, ideally suited for cartridges such as .270 Winchester, .30-06 and 300 Winchester Short Magnum. Anyone seen/tried this combo? Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Loading density is perfect for magnums. both should give you specific info. Learn more about Enduron powders at www.enduronimr.com. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. For more information and IMR 4166 LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. I'm using this in my Tikka CTR 223 under 73 gr Berger BT target bullets. Youll also find official load data in the Hodgdon 2020 Annual Manual. New customer? PRBs testers explain the full set of equipment and steps in their loading process in the Full Test Report. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. This is a true magnum propellant yielding outstanding performance in 6.5-300 Weatherby, .264 Win Mag, 28 Nosler and .300 Rem Ultra Mag, among other cartridges. Plain cartridges, in contrast, turned in an average extreme spread of 51 fps. It provides top performance in big game cartridges such as 25-06, 280 Remington and 300 Winchester Magnum. Then Try IMR 4166 Powder, Powder Temp Stability IMR Enduron vs. H4350 and Varget, http://precisionrifleblog.com/2016/06/19/powder-temp-stability-hodgdon-extreme-vs-imr-enduron/, Powder Temp Stability: IMR Enduron vs. Hodgdon Extreme, Guide to IMRs Enduron Powders What You Need to Know, Powder Valley has new IMR 4166 Powder in Stock, IMR Introduces New Enduron Powders: 4166, 4451, 7977. Posted: 7/2/2021 8:19:25 PM EST. I shot a 4.125", 10-shot group at 600 yds - well under 1 MOA and slightly better than my Varget loads, although they were close enough that I attribute the difference to the shooter. I loaded 23.5 gr in Lapua brass with no trouble using a 10" drop tube: http://www.xxicsi.com/powder-funnel.html It acts a whole lot like Varget, but is much easier to find. I did the usual load development testing and found that 43.0 gr. Then Try IMR 4166 Powder", A couple seasons back, PrecisionRifleBlog.com (PRB) published a significant field test of powder temperature stability. IMR powder has long been a choice powder for knowledgeable reloaders. Find load data for IMR 3031 propellant by clicking the button "Loads for this Powder".More about this powder:A medium burn speed propellant with many uses, IMR 3031 has long been a favorite of 308 Match shooters using 168-grain match bullets. OK, we're down to 1/3 MOA with a bit more to go. DuPont had historically been a major supplier of military propellants long before becoming one of the handloaders favorite powders. Choose a IMR powder and find the respective load data for it. For example, variation in velocity does NOT appear to be linear across the full range of temperatures. Hodgdon Extreme Series powders have attracted quite a fan base, with over 90% of the top shooters in the Precision Rifle Series choosing to run one of those powders. So far IMR4166 has worked great for me in the .243 Winchester with light bullets, the .257 Roberts with 75-100 grains bullets, .308 Winchester with 150's and 168's, the .303 British, 8x57 and .45-70 with "low pressure" loads. It is a true magnum cartridge propellant with outstanding performance in such cartridges as the .300 Winchester Magnum, 7mm Remington Magnum, .338 Lapua and more. In 2015, IMR will introduce three (3) new Enduron powders: IMR 4166, IMR 4451, and IMR 7977. Other than that , great job, thanks. IMR 8208 XBR is accurate, clean-burning, and offers good velocity. However, to up the ante the Enduron line also utilizes copper fouling reducing technology to help keep your bore free of the hard to remove copper. IMR 4166 was released a few years ago as a temperature insensitive powder that is expected to replace 4064. The Enduron Technology powders are available in one-pound (1 lb) and eight-pound (8-lb) containers from quality reloading retailers. FPS low 2735 high 2789. Is there a different load data site? Third, Enduron powders are designed for optimal load density. Find load data for IMR TrailBoss propellant by clicking the button "Loads for this Powder".More about this powder:Find load data for Accurate 5770 propellant by clicking the button "Loads for this Powder".More about this powder:Trail Boss was designed specifically for low-velocity lead bullets suitable for Cowboy Action shooting. . The IMR brand was created under the DuPont Corporation. Very consistent velocity, quality powder, not so good on powder throw due to it being a stick powder. var _gaq = _gaq || []; You may not reproduce original text or photos without advanced permission in writing. To be able to use the full range of Shopware 6, we recommend activating Javascript in your browser. .1 to .2 gr accuracy. For more information, go towww.P65Warnings.ca.gov. Tried their 7977 in a magnum rifle and it had same accuracy as H1000. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. Below you will see today's round robin from 45.0 to 46.4 grains of 4166. Learn more about Enduron powders at www.enduronimr.com. IMR 4166: This newer propellant produced by General Dynamics in Canada had the best temperature insensitivity and may be the best substitute for Varget across a wide temperature range with 77 to 80 grain bullets. Posted by Christopher Brown on Apr 19th 2022. Find load data for IMR 4350 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4350 is a medium- to slow-burn rate propellant and is the number one choice for the new short magnums, both Remington and Winchester versions. Expensive compared to varget. Whether a rifle is sighted in during the heat of summer, hunted in a November snowstorm or hunting multiple locations with drastic temperature swings, point of impact with ammunition loaded with Enduron technology will be very consistent. ARCHIVED. OAL 2770 Sierra Case This powder is comparable to Hodgdon H4831. Hodgdon Varget was the second least temperature sensitive powder in this test, with 46 fps of variance in muzzle velocity between temperatures of 25 F and 140 F. IMR 4166 performed very similar to Varget, and proved to be fairly insensitive to large swings in temperature. IMR 4166 possesses the fastest burn rate in the Enduron lineup. (function() { Share the post "Powder Temp Stability: IMR Enduron vs. Hodgdon Extreme". It is an extruded powder and is perfect for cartridges like 270 Winchester, 30-06 or 300 Winchester Short Magnum, among others. The responsible reloader always errs on the side of caution, so I decided to stop there. In another study, IMR 4166 was identified as the best replacement for Varget between 61F and 103F for .308 F-TR rifles. .308 Winchester (IMR-4166 Data) Warning! IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. I have enough on hand to last for a while, but when I found some IMR 4166 available, I decided to try it for my MPA .308. More about this powder: IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. They list loads for Sperry SP and Barnes TTSX in 55gr weights. Awsome powder in my book. Powders include IMR Load data for the new IMR 4166 was taken from Hodgdon's 2015 Annual reloading manual, and in increments of .3 grains or less, loads were worked up from 24.0 through 25.1 grains of IMR 4166. You can find that here: http://precisionrifleblog.com/2016/06/19/powder-temp-stability-hodgdon-extreme-vs-imr-enduron/, Share the post "Powder Temp Stability IMR Enduron vs. H4350 and Varget". To me that says Gebby got it right long ago. At 600 yds, the POI with 4166 loads was about 1.2 MOA higher than when using 43.2 gr. First used in battle in 1805 by United States naval forces against pirates off the coast of Algiers, DuPont supplied more than 80% of Allied Forces powder needs in World War I. The maxorder quantity of any powder SKU is. Between 1/3 and 1/2 MOA for 5 shot groups at 200yd. Give it a try if you've already purchased it. I live in florida and shoot the same load all year. Load . If you commonly use Varget, Alliant Reloder 15, Norma 203B, IMR 8208 XBR, or Vihtavuori N140, you might want to try IMR 4166.
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