Ammunition. For example, berger lists 90gr of H1000 as the max charge. Reviews can only be submitted while being logged in. either expressed or implied is assumed for the use of this data. We appreciate your patience and continued support! Gun: Savage Model 110 BA; Barrel Length: 26 inches; 1-in-9-inch twist; Case: Lapua; Primer: Federal 215 Large Rifle Magnum; Bullet Diameter: .338 inch; Maximum COAL: 3.681 inches; Maximum Case Length: 2.724 inches; Trim to Length: 2.714 inches. Calibers range from .22 to 9.362, and our most well-known bullets are Scenar and Scenar-L match projectiles and Naturalis and Mega hunting bullets. Full Member. it takes all the guess work out of the "what if " questions we reloaders have . Really consistently accurate results. I have not ran 8133 in 338 yet. I shot five rounds and at 100 yards and I got a group that was less than 3/4 of an inch. Picked up the 7977 for my 280 ack and 300 wm. I'll check with him and PM you if you dont mind. Reloading- What pressure signs do you stop at. I have H1000 which I have tried with no luck. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. For the 338 Lapua, the 300 grainers are too heavy and IMR 8133 is too slow. IMR Enduron 7977 is a slower burn rate in the Enduron family. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. The slowest burn rate Enduron Technology extruded powder and a true magnum cartridge propellant. During this time of overwhelming demand, our team is doing everything possible to produce more bullets and ammo than ever before. When will it be back in stock? Minuteman. Posted by marcus john tweddell on Mar 3rd 2021. have used this powder in a .270 wsm useing the Hornady 150 grain SSTwith the exact load as HODGDON recomends and found it accurate and takeing large red deer out to 500 meters with ease. New customer? Find A Dealer. imr 7977 for sale IMR powder production dates back more than 200 years, when E.I. I had no luck with my factory RPR barrel. I understand this is an old thread, but want to reply anyway. You are using an out of date browser. The slowest burn rate Enduron Technology extruded powder is IMR 7977, and is a true magnum cartridge propellant. Let me know if you want to sell the barrel. This demand lead to an incredible 2.5 billion pounds of smokeless propellants being manufactured by DuPont for Allied Forces in World War II. Just for comparison's sake, the 338 Federal will send a 215 grn bullet out at 2500 fps, the 338-06 . I use 98 grains in a 31" 300 RUM. if you're serious about reloading and shooting I really recommend it . . Any help and/or guidance would be much appreciated. IMR 7977 performs comparably to Hodgdon H1000 but charge weights are materially different. This is a true magnum propellant yielding outstanding performance in .300 Winchester Magnum, 7mm Remington Magnum and .338 Lapua Magnum. BARREL Twist 1-10" GRS. Pushing 163gr SCBT 3611 fps (avg.) This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. I set it for a 105% max case fill , and set it for the max rated pressure of 60916 psi . Magnum and .338 Lapua. Reloading- What pressure signs do you stop at. You must log in or register to reply here. Matching Maximum Pressure: 60916 psi, or 420 MPa . 338 lapua 250 grain BTHP. The COAL is measured from the base of the case to the tip of the bullet. 56.0 grns behind a 100gr NBT got me 0.5" at 100 with 3156 f.p.s. IMR is an acronym for Improved Military Rifle. Mag. Loading density is perfect for magnums, contributing to superb uniformity. Bottom line, I like it so far. Each of these are still favorites with handloaders today! . Imr 7977 Load Data For 338 Lapua If you are looking for Seeley Imr 7977 Load Data For 338 Lapua Yes you see this. I have had good luck with 4451 in 6mm Rem with 90 gr BT and 7mm Rem Mag with 150 BT. I paid about $160 for it originally , and have bought many updates over the years . .338 Winchester Magnum - Published Manufacturer Loading Data. then I can get a powder chart from fastest velocity to slowest velocity . To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. YMMV. IMR Enduron 7977. I tried 250gr Bergers and 7977 in a pressure test. it should give the highest velocity without showing signs of over pressure . Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to so I checked it out a bit more. Using bullets from Barnes TTSX, Barnes TSX, Speer SP, Nosler Part, Sierra SPBT, Hornady SP, Barnes TTSX BT, Swift SP, Sierra HPBT. IMR 7977 Enduron . Jim, I understand this is an old thread, but want to reply anyway. I have 4 shooting buddies that run RPR's. It is slower burning than expected. We offer a wide variety of cases and bullets for hunting, sport shooting, target and tactical purposes. Please enter your login details below. 7977 IMR Enduron Powder; 4166 . IMR 7828SSC 93.8 3201 104.3C 3583 *Magnum 104.6 3336 116.2C 3670 338 Lapua Magnum Suggested Bullet Use 185-grain TTSX BT Sectional Density .231 Ballistic Coefficient .432 C.O.A.L 3.600" uggested ullet se Suggested Bullet Use Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. We place limited powder inventory for sale on a regular basis on our website. You are using an out of date browser. I recently bought one each of these powders to try in my 300 win mag and my 6.5 x 47 lapua. It hasn't wiped out the idea of shopping in a being store, but it gave the consumers an swap means to shop and a better announce that . holds 78.6 grains of water, which means the Nosler has a 12 percent increase in case volume while maintaining the same 3.340-inch overall cartridge length. Please help us to improve and report any suggestions via our contact form. Predicted Data for Indicated Charges of the Following Powders. The Best Hunting Bullets for the 338 Lapua Mag. Improved Military Rifle IMR 7977. I've been working on trying to get my 338 to shoot better. I tested some a while back in a .338LM Improved 40 and even compressed loads weren't showing pressure signs. The components I currently have are VihtVuori N560 Powder and Sierra 250 Game king & Sierra 300 Match King bullets. RL33 is working great in my 338 RUM with the 300 EH. Really consistently accurate results. 56.0 grns behind a 100gr NBT got me 0.5" at 100 with 3156 f.p.s. The maxorder quantity of any powder SKU is. Comprehensive load data for IMR 7977 Enduron reloading powder und technical specifications for this propellant. Im hoping to try 250gr berger EH, 285eld-m, and 285 BTHP. Most of the bullets in .338 are better suited for the speeds of the 338 Winchester Magnum, 338-06, or 338 Federal and may fragment if pushed by the 338 Lapua Magnum and impact game at close range. Trail Boss Reduced Rifle Load. Have new brass, Hornady, and primers . For the 338 Lapua, the 300 grainers are too heavy and IMR 8133 is too slow. I tried 7977 and H1000 without much luck, finally settled on Retumbo with the 285gr ELD-Ms. Sign up with your email address to receive news and updates. Lyman #38. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. Have been looking at the 7977 for my 270 with the Matrix bullets. For the best experience on our site, be sure to turn on Javascript in your browser. I picked up some IMR 7977 to try some different bullet/powder combos but Im not finding much data. Ramshot Hunter. I am finally starting to play around with different loads for my .338 Lapua. IMR 4831 92.4 72.7 4.71 2519 100.0 60916 8941 1.444 !DANGEROUS LOAD-DO NOT USE! Lapua's Scenar-L bullet is the result of decades of experience and state of the art manufacturing capabilities combined with extensive testing. IMPORTANT: Please view the special notes by clicking here. When we are sold out, we are sold out. . 26.0 inch = 660.4 mm Predicted Data for Indicated Charges of the Following Powders. VAT (where applicable), shipping costs and possible delivery charges. We use CCI. Two are 338 LM. I was amazed at the velocity witch was more that I was supposed to get with 71 grains. I'm hoping to try 250gr berger EH, 285eld-m, and 285 BTHP. Inkognito. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb . 14 rds from my 338 Win Mag Rem 700 XCR. Loading density is perfect for magnums, nicely filling the case at maximum charges . .338 Lapua Magnum - Published Manufacturer Loading Data. IMR Enduron 7977 is a slower burn rate in the Enduron family. It'll generate more velocity but it shoots well at 2800. Any gunpowder required by handloaders can be sourced through these brands. 338 Lapua Mag - 265 grain Version 9.0 24" H-S Prec. Some 7977 load data here. Lapua FMJ: 2856.44: Consistent: 45 grains 4166: 123 gr. Enduron Technology extruded powder with the slowest burn rate, IMR 7977 in stock now for sale online near me, is a true magnum cartridge propellant. Magnum, .300 Wby. 2825 91.0 * 2754 89.0 2684 . Recipe Type: Rifle . I too am interested. If anybody would like to share their load data using IMR 8133, I would be very grateful. IMR Enduron 7977 is a slower burn rate in the Enduron family. I hope this shows how valuable quickload can be . Feenix: I just posted this in response to a similar question by NavyChief. DuPont founded the company. Improved Military Rifle IMR 8208 XBR. We continue to prioritize our shipments to our traditional sales channels to maximize powder availability at retailers. Be Alert: Publisher cannot be responsible for errors in published load data. IMR 4166 possesses the fastest burn rate in the Enduron lineup. One of the guys may want it. Only did a velocity check on back behind the garage. I did see Hodgdons data, but unfortunately they only list the hornady SP bullet. Improved Military Rifle IMR 7828 SSC. 2796 88.0 * 2712 86.0 2628 H1000 93.0 MAX. I myself have been shooting Sierra 300gr with H1000. Shellholders: Hornady #43. For a better experience, please enable JavaScript in your browser before proceeding. 7977 uses almost exactly the same data as H1000 with very similar speeds. @3000 fps. The 33 Nosler case holds 88.3 grains of water. Sign up to get updates and access to exclusive promotions. IMR Enduron 7977 is a slower burn rate in the Enduron family. It performs admirably in cartridges such as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua, and a variety of others. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. Cartridge Comparisons. It yields outstanding performance in such cartridges as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua and a host of others. Our mission is to provide quality products and services in a manner which enhances the lives of our employees, familes, customers, suppliers, and our communities. Magnum, .300 Win. Reactions: Evlshnngns. IMR 7977 90.0 MAX. I have H1000 which I have tried with no luck. I tried H1000, IMR7977, and 4891 with 4 different bullet combos. This testing was with Hornady 285 ELD-M with Alliant Reloder 26. Warning; Manufacturer Loading Data; Cartrige Powder Recommendations; . 123 gr. Ac c uB ond Lo n g R an g e 0 .7 3 2 IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. have used this powder in a .270 wsm useing the Hornady 150 grain SSTwith the exact load as HODGDON recomends and found it accurate and takeing large red deer out to 500 meters with ease. IMR 7977 are couple more options. Retumbo was 94g at 2654fps. It is recommended for the .25-06, 6.5mm-284, 7mm Rem. Consistent performance . 8mmmaghunter Member. IMR 8133 IMR Enduron 8133 is the slowest burn rate in the Enduron family. snoopy happy dance emoji 8959 norma pl west hollywood ca 90069 8959 norma pl west hollywood ca 90069 With 285 ELDs I hit hard lift at 91 grain. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. The slowest burn rate Enduron Technology extruded powder is IMR 7977, and is a true magnum cartridge propellant. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. mdslammer Sergeant. Improved Military Rifle IMR 7977. IMR is a brand in the Hodgdon Powder Company lineup. JavaScript seems to be disabled in your browser. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. With 7977 I discern no difference between CCI 250 or Fed 215 . Bullet: Nosler BST 200 gr: Bullet weight: 13 g / 200 gr: B.C: 0.414: C.O.L: 92.0 mm / 3.622 # 33200: Gunpowder Charge Weight Velocity m/s Velocity fps; Norma MRP: . Most of my guns will not shoot a tight group without some. I used a 26" bbl , my rifle has a 30" bbl . Lee #5. . You are using an out of date browser. online shopping has now taking into account a long way; it has untouched the quirk consumers and entrepreneurs reach issue today. Improved Military Rifle IMR 8133. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. 1. For powder I like IMR 7828 and scored 2 lbs of the IRM7828scc. Loading density is ideal for magnums, filling the case nicely at . Jun 3, 2010 202 11 Las Vegas . The Hornady 143-grain ELD-X, Nosler 142-grain ABLR, Berger Classic Hunter, and Berger Hybrid Target bullets all . It may not display this or other websites correctly. Shellholders: Hornady #5. To be able to use the full range of Shopware 6, we recommend activating Javascript in your browser. It's hard to pick favorites, but for powders, IMR 8133 was a standout with almost all loads tested in my rifle. Ive been working on trying to get my 338 to shoot better. Loading density is perfect for magnums, contributing to superb uniformity. We do not take backorders and our Tech Services team cannot take orders via email or phone. Find load data for IMR 7977 Enduron propellant by clicking the button "Loads for this Powder". 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. SAAMI . That's suprising. MTH ( standard, not single feed version. The IMR series of handloading powders were the only choice to wring full performance out of rifle calibers. I get 2800 fps with a 300g Berger in my 30 inch barrel. It may not display this or other websites correctly. It may not display this or other websites correctly. 338 Lapua Magnum Reloading Data | Berger Bullets. 338 lapua 250 grain BTHP. I've had quickload since 2009 , I think . Regarding primer choice for the .300 Norma Magnum, you'll most definitely want a good large rifle magnum primer to ignite that powder column, especially since powder charges can exceed 90 grains. In this video we discuss reloading the Savage 110 BA stealth in 338 Lapua Magnum. Our component offering includes cases and bullets for both centerfire rifle and handgun. You are using an out of date browser. Load Specifics. .300 win mag imr 7977, 168 grain berger 7mm rem mag with 7977 powder, 26 nosler with imr 7977, 280 ackley improved with imr 7977 data and 168 berger . Loading density is perfect for the very large magnums, including the 6.5mm and 7mm magnums. I hit Harold bolt lift around 93gr. Keying in on the PRC's role as a big-game cartridge, I concentrated on loads with high-BC bullets. Sierra SBT COAL: 3.575 inches; Sierra HPBT MatchKing COAL: 3.680 inches. US 869. hope this helps . Powders include IMR, Hodgdon, Winchester Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. Mark . JavaScript is disabled. Hey guys, does anybody have any IMR 7977- 338LM data? WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Submitted Loading Recipes Show all Submitted Loading Recipes Tipstrike Experiment in 7x66 Vom Hofe Preparing 204 Ruger Norma Brass . Works great in a 7mm Remington Magnum cartridge out of a Winchester Stainless Model 70 using 136 gn Hammer (sledge hammer) bullets. I dont have any velocity data, but I did run a couple loads with . Vihtavuori N550 - powerful loads for hunting. The store will not work correctly in the case when cookies are disabled. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. 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. JavaScript is disabled. The IMR brand was created under the DuPont Corporation. The 6.5 mm Creedmoor (top.) New Products. 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. In doing so, we deal with integrity and honesty . N. ntg . Reply. In 2003, Hodgdon Powder Company acquired the IMR brand bringing these prestigious powders under the umbrella that also includes Hodgdon, Winchester and GOEX. For a better experience, please enable JavaScript in your browser before proceeding. For a better experience, please enable JavaScript in your browser before proceeding. Hogdon's 2015 annual load manual has data and some good articles on them. Loading density is perfect for magnums, contributing to superb uniformity. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb . Just couldnt get under 0.8 moa. Loading density is perfect for magnums, contributing to superb uniformity. Ramshot Hunter. I was wondering if the latest version of Quick load could work up recommended loads for the 338 Lapua using the Cutting Edge 252 gr. The COAL stated is this table is according to the SAAMI specification. IMR 7977 performs comparably to Hodgdon H1000 but charge weights are materially different. Charge weights are nearly identical to H1000, which i understand 7977 is supposed to be similar too. Scenar-L has truly earned its . Be the first to share your insights. JavaScript is disabled. I've had good success with 7977 in the 338 Lapua with 300g Bergers. Bullet Weight: ALL. 160 gr. He's not a precision guy and only shoots to 600. DuPont had historically been a major supplier of military propellants long before becoming one of the handloaders favorite powders. * All prices incl. Warning! For the best experience on our site, be sure to turn on Javascript in your browser. with a shortened case body. *Recommended Powder C Compressed Load 2 . SUBSCRIBE TO OUR NEWSLETTER TO STAY UP ON THE LATEST. After barrel break-in, I ordered up a set of custom whidden dies and started loading the following: Bullets: 300 gr. is essentially the 6.5 mm Swede (btm.) It is the perfect burn speed for cartridges such as .308 Win, 7.62mm NATO, 22-250 . We do not take backorders and our Tech Services team cannot take orders via email or phone. The IMR Enduron Powder load data published by this website is intended discussion . . US869 is a dense propellant that allows the shooter to use enough powder to create maximum velocities in cartridges such as the 7mm . I worked up a load for my Winchester Model 70 in 270WSM with a 24 inch Bartlein barrel, using 150 Berger VLD's in RP case, 215 primers and 68-70 grains of 7977. These loads were shot by Brian Pearce of Wolfe Publishing Co. IMR Enduron 7977 is a slower burn rate in the Enduron family. I love it! Soft Point: . Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. This website uses cookies to ensure the best experience possible. I searched for RL 33 yesterday and they didn't have any, nor Retumbo. Very fast flat shooting powder. Reloading data for 338 Lapua Magnum. .338 Lapua Magnum (using Sierra bullets) Warning! In addition to the 6.5x55 mm Swedish, the Sauer 404 is chambered in 15 other . if anyone is interested i did the same process with the IMR 4451 powder in my 6.5x47 lapua for which there is no published data for this powder. The IMR series of powder is trusted by reloaders all over the world and is suitable for a wide range of reloading applications. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. Supersubes Heathen. RCBS #48. Near Maximum ! Joined Jan 8, 2012 Messages 7 . Ramshot Big Game. RCBS #14. Thanks fellas. 8. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Took a while but finally have all the components to reload my 338 Lapua Mag. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. We continue to prioritize our shipments to our traditional sales channels to maximize powder availability at retailers. For this reason, the IMR brand powders truly are Legendary products. No reviews found. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. For more information, go towww.P65Warnings.ca.gov. Ill be going to 338 LM AI and shoot 300gr Bergers. I'm using RL33 with 300 gr berger hunting bullets . Works great in a 7mm Remington Magnum cartridge out of a Winchester Stainless Model 70 using 136 gn Hammer (sledge hammer) bullets. Blog. these would be considered max powder charges . VihtaVuori N150. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. Loading density is perfect for magnums, contributing to superb uniformity. IMR 7977 Enduron 109.2 77.7 5.03 2708 89.3 60000 8519 1.264 ! https://www.snipershide.com/shooting/threads/new-338-lm-loads.6955101/. . Hey guys, does anybody have any IMR 7977- 338LM data? I got a buddy in FL that's about due for a barrel change. Thread starter jmden; Start date Feb 1, 2015; Feb 1, 2015 #1 jmden Well-known member . Lee #25. I'm not very computer savy , so if I can figure out how to use it , anyone can . CHEAP IMR 7977 AVAILABLE IN STOCK. We use cookies to make your experience better. For a better experience, please enable JavaScript in your browser before proceeding. March 27, 2016 Gavin Reloading Blog, Uncategorized 308 Winchester, 338 Lapua, AR-10, AR-15, Gunpowder, IMR 4166, IMR 4451, IMR 4955, IMR 7977, IMR Enduron Ultimate Reloader Moves to the Country Anyone that lives in the city can tell you just how difficult, limiting, and expensive shooting can be when you don't have access to the country. Berger Elite Hunter & 285 gr. IMR 7977 performs comparably to Hodgdon H1000 but charge weights are materially different. More about this powder: IMR Enduron 7977 is a slower burn rate in the Enduron family. They're all having good results. With the bullets touching the lands 69 grains gave me an average velocity of 3140 ft/sec.. Vihtavuori's N550 rifle powder was originally developed for .30-06 Springfield and .308 Win. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. Used same loads as 4350 and RL17. US 869 is a 50 BMG propellant that offers significant advantages in many magnum rifle applications! I sure wouldn't want to do without it . IMR now offers four Enduron powders that cover a broad range of burn rates. 26. The .300 Norma case has a capacity of 103.0 grains of water, so powder charges will approach 90 grains or more, depending on the bullet weight. H1000 is supposed to be extremely close to IMR 7977. More what I was meaning is I think 97 grains of 7977 with 250 grain bullets may be dangerous in bullets other than the 250gr hornady soft point. h4895 Reduced Rifle Load. Loading density is perfect for magnums, nicely filling . Has any one tried this powder with any luck? Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. here is the Data I found of Hodgdon's site. But I agree with the above post. Hope it helps. Thank goodness we do not have a .338 Lapua, as Jim's shoulder would not handle the punishment! Hogdon's 2015 annual load manual has data and some good articles on them. Find load data for IMR 7977 Enduron propellant by clicking the button "Loads for this Powder". so as always start low and work up . . Thanks, but I prefer shooting .300 Bergers. it should give the highest velocity without showing signs of over pressure . We place limited powder inventory for sale on a regular basis on our website. Cedar Park, Texas. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Loading Data . It may not display this or other websites correctly. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum . Ordered a LRI barrel after giving up. Good luck with the new set up. for a 338 lapua RL33 is going to be hard to beat . Share your experiences with other customers. Reply. The Scenar-L has the refined qualities of the original Scenar bullet with higher standards of jacket wall concentricity, weight variation and dimensional uniformity. Every week of WW II, as many munitions were used as in all of WW I. Ok, but just to give you some perspective You must log in or register to reply here. IMR 7977 for the 300 win mag . Resources. It seemed to me Hodgdon was more aggressive with the max load when comparing to other loads and in my case is sure was. The IMR brand was first introduced under DuPont in the 1930s. Yields outstanding performance in such cartridges as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua and a host of others. calibers in the late 90's. The N550 is an ideal fit for many of the 30 caliber magnums with lighter bullets, but also useful across a wide range of bore sizes in various shooting disciplines. IMR Enduron 7977 is a slower burn rate in the Enduron family. I had been using Hornady 250grn BTHP and have been unable to obtain.
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