At 600 yds, the POI with 4166 loads was about 1.2 MOA higher than when using 43.2 gr. IMR 4166 possesses the fastest burn rate in the Enduron lineup. Minuteman. .1 to .2 gr accuracy. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. This is a true magnum propellant yielding outstanding performance in .300 Winchester Magnum, 7mm Remington Magnum and .338 Lapua Magnum. When we are sold out, we are sold out. Improved Military Rifle IMR 4166 Improved Military Rifle IMR 4320 Improved Military Rifle IMR 4350 Improved Military Rifle IMR 4451 Improved Military Rifle IMR 4831 Improved Military Rifle IMR 4895 Improved Military Rifle IMR 8208 XBR Improved Military Rifle SR 4759 Ramshot Big Game Ramshot TAC Ramshot X-Terminator Shooters World AR PLUS The illuminated reticle made it very easy to see on the black target, and honestly was the first time I have ever had used the feature (now it may be hard to go back). IMR 4166 Enduron 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. No reviews found. The manual allows for stiffer charges, but at 25.1 the load begins to compress. 44gr 4166 Be Alert: Publisher cannot be responsible for errors in published load data. We do not take backorders and our Tech Services team cannot take orders via email or phone. (see note 1 ). Find load data for IMR 7977 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 7977 is a slower burn rate in the Enduron family. PRBs testers talk about those things, provide a few other insightful views of the data, and discuss tools that can help you manage temp/muzzle velocity in the field in their full post. The top shooters in the PRS and veteran long-range shooters in other disciplines have learned to value a temperature-stable powder. Find load data for IMR 7828 SSC propellant by clicking the button "Loads for this Powder".More about this powder:IMR 7828 SSC is a magnum rifle powder with exactly the same burn rate as standard IMR 7828 and uses the same data. It is equally effective in small-capacity varmint cartridges from 223 Remington to 22-250 Remington, and it's a great 30-30 Winchester powder. I loaded 23.5 gr in Lapua brass with no trouble using a 10" drop tube: http://www.xxicsi.com/powder-funnel.html then consider IMR 4166. - 24hourcampfire Previous Thread Next Thread Print Thread Hop To BP-B2 IC-A B3 IC-B B4 RR1-22 Who's Online Now 828 members ( 10Glocks, 12344mag, 007FJ, 1911a1, 1100mag, 95 invisible), 2,340 guests, and 1,313 robots. IMR 4166 is one of IMRs Enduron family of propellants. Copper fouling should be minimal, allowing shooters to spend more time shooting and less time cleaning a rifle to retain accuracy. Precision shooters will find an Enduron option well-suited to most of the popular precision cartridge types. This powder is comparable to Hodgdon H4350. 2. This Enduron series powder is temp-stable and accurate. 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. For info on other IMR powders, visit www.imrpowder.com. These short-grain, extruded powders will deliver temperature insensitive quality while keeping copper residue to a minimum. This website uses cookies to ensure the best experience possible. Loading density is perfect for magnums, contributing to superb uniformity. It was less accurate than 4 other powders. IMR claims that Enduron powders are not sensitive to temperature changes. Or maybe have QuickLoad data? Most powders arent specially formulated to be temperature stable. The Hodgdon powder company is world renowned for introducing revolutionary technology to the reloader. * All prices incl. Today, only the newest reloading fuels can exceed that with a 55-grain bullet in the commercial .22-250. Anyway, I like the 4166! Such loads are marked with an asterisk in the data to show where standard 7828 will not fit. Its a perfect burn speed for cartridges like the 308 Win/7.62mm NATO, 22-250 Remington, 257 Roberts and dozens more. Subscribe to the free newsletter and do not miss any news or promotions. 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". For more information and IMR 4166 LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. Loading density is perfect for the very large magnums, including the 6.5mm and 7mm magnums. IMR 7977 is comparable to Hodgdon H1000. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. At the 2015 Shot Show they did just that and released the IMR Enduron Line. Guide to IMR Enduron Powders Temp Stable, Reduced Fouling, IMR Introduces New Enduron Powders: 4166, 4451, 7977, Guide to IMRs Enduron Powders What You Need to Know, IMR Enduron 8133 New Slow-Burn-Rate Magnum Powder, IMR Powders introduces IMR 4955 Enduron Powder. Other than that , great job, thanks. IMR 8133 performs comparably to Hodgdon Retumbo but charge weights are materially different. So they would likely show much larger swings than what these four top-performing powders showed. It provides top performance in big game cartridges such as 25-06, 280 Remington and 300 Winchester Magnum. Case: Winchester; Twist: 1:12 inches; Primer: Federal 210M, Large Rifle Match; Barrel Length: 24 inches; Trim Length: 2.005 inches. . .225 Win. Its loading density is perfect for magnum cartridges and contributes to superb uniformity, yielding outstanding performance in 300 Winchester Magnum, 7MM Remington Magnum and .338 Lapua Magnum. 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. IMR now offers five (5) Enduron powders: IMR 4166, IMR 4451, IMR 4955, IMR 7977, and IMR 8133. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. .223 Remington (Hodgdon Data Using IMR Powder) reloading data with 221 loads. The LabRadar is a new type of device that allows you to measure muzzle velocity within at least +/- 0.1% of the reading. Testing consisted of a single 5-shot group of each incrementmental charge weight just to get a rough feel for the potential of this powder. Temperature change stability the Enduron line is insensitive to temperature changes. Weve been quite pleased with IMR 8208 XBR as a Varget alternative. It is an extruded powder and is perfect for cartridges like 270 Winchester, 30-06 or 300 Winchester Short Magnum, among others. I was planning to switch to 4166 for my .308, but it seems that it has also become nearly impossible to source. Below you will see today's round robin from 45.0 to 46.4 grains of 4166. The components in question make up my service rifle load in .223 and they are Hornadys 55 grain V-max bullet seated into a Lake City brass case at an OAL of 2.270 and ignited with a Wolf Small Rifle Primer. Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR End. 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. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. 3, e-mail Hornady and the powder mfg. .45 ACP and .38 Super, while their rifle offerings range from .223 Remington to .30-06 Springfield. Great stuff! I'm very happy with this powder. ga.src = ('https:' == document.location.protocol ? $182.75. The new powder line-up comes in three flavors: 4166, 4451 and 7977. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. ARCHIVED. VAT (where applicable), shipping costs and possible delivery charges. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. 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. This powder is comparable to Hodgdon H4831. For more information and IMR 4166 LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. Re: IMR 4166 in .223. 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. Some powders are more affected by changes in temperature than others. Second, Enduron powders are all very temp-stable. 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. Sign up to get updates and access to exclusive promotions. Subscribe to the free newsletter and do not miss any news or promotions. Perhaps the new IMR 4166 will be as good or better. bolt reload data with 65gr. New customer? They are suitable for a wide variety of cartridges, from small varmint cartridges all the way up to the .338 Lapua Magnum. If a pistol says Magnum, IMR 4227 is the choice for true magnum velocities and performance. _gaq.push(['_setDomainName', '.accurateshooter.com']); IMR 4451 is a mid-range burn speed powder, ideally suited for cartridges such as .270 Winchester, .30-06 and 300 Winchester Short Magnum. In 2015, IMR will introduce three (3) new Enduron powders: IMR 4166, IMR 4451, and IMR 7977. I have a pound of 8208 XBR for 223 development, haven't gotten round tuit yet. Or maybe have QuickLoad data? To me that says Gebby got it right long ago. A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. It is available right now at Powder Valley in both one-pound ($25.45) and 8-pound ($182.75) containers: IMR4166-01: IMR 4166 1 LB. })(); To comment on a post, click Post Title or "Comment" Link. Moving on, the individual loads were fired and the barrel was allowed to cool between each group. Each of these are still favorites with handloaders today! We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. Sounds familiar! CL 2.005 DuPont had historically been a major supplier of military propellants long before becoming one of the handloaders favorite powders. Load data for the new IMR 4166 was taken from Hodgdons 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. 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).