imr 7977 for sale IMR powder production dates back more than 200 years, when E.I. Ramshot Big Game. Bullets. The maxorder quantity of any powder SKU is. Loading density is perfect for the very large magnums, including the 6.5mm and 7mm magnums. IMR 7977 performs comparably to Hodgdon H1000 but charge weights are materially different. 338 Lapua Magnum Reloading Data | Berger Bullets Two are 338 LM. then I can get a powder chart from fastest velocity to slowest velocity . 2825 91.0 * 2754 89.0 2684 . Ill be going to 338 LM AI and shoot 300gr Bergers. IMR Enduron 7977 is a slower burn rate in the Enduron family. Warning! Predicted Data for Indicated Charges of the Following Powders. Our component offering includes cases and bullets for both centerfire rifle and handgun. @3000 fps. Consistent performance . In addition to the 6.5x55 mm Swedish, the Sauer 404 is chambered in 15 other . A true magnum spherical rifle powder, it is superb with heavy bullets in big, overbore rifle cartridges. Imr 7977 Load Data For 338 Lapua If you are looking for Seeley Imr 7977 Load Data For 338 Lapua Yes you see this. 338 Lapua Mag - 265 grain Version 9.0 24" H-S Prec. Picked up the 7977 for my 280 ack and 300 wm. 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. IMR 7977 performs comparably to Hodgdon H1000 but charge weights are materially different. The COAL stated is this table is according to the SAAMI specification. Has any one tried this powder with any luck? For the 338 Lapua, the 300 grainers are too heavy and IMR 8133 is too slow. IMR Enduron 7977 Smokeless Gun Powder IMR 7977 Enduron . Load Specifics. SUBSCRIBE TO OUR NEWSLETTER TO STAY UP ON THE LATEST. Each of these are still favorites with handloaders today! . It may not display this or other websites correctly. 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. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. 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. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. I understand this is an old thread, but want to reply anyway. For powder I like IMR 7828 and scored 2 lbs of the IRM7828scc. But I agree with the above post. Warning; Manufacturer Loading Data; Cartrige Powder Recommendations; . . IMR Enduron 7977 | Hodgdon Hey guys, does anybody have any IMR 7977- 338LM data? I tried 7977 and H1000 without much luck, finally settled on Retumbo with the 285gr ELD-Ms. After barrel break-in, I ordered up a set of custom whidden dies and started loading the following: Bullets: 300 gr. Used same loads as 4350 and RL17. 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. Just tagging in, I'm curious what folks say about 7977. for a 338 lapua RL33 is going to be hard to beat . imr 7977 load data 338 lapua - masar.group This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. YMMV. Loading Bench: 6.5x55 mm Swedish - An Official Journal Of The NRA With H1000 being harder to find recently I am going to try the 7977 with both the 300Gr and some 250Gr Bergers. I set it for a 105% max case fill , and set it for the max rated pressure of 60916 psi . Guide to IMR's Enduron Powders What You Need to Know US 869. forum.accurateshooter.com/threads/imr-7977-in-338-lapua.4021835/, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.49. IMR Enduron 7977 | Hodgdon The Scenar-L has the refined qualities of the original Scenar bullet with higher standards of jacket wall concentricity, weight variation and dimensional uniformity. Joined Jan 8, 2012 Messages 7 .338 Winchester Magnum - Published Manufacturer Loading Data. Loading density is ideal for magnums, filling the case nicely at . Cheap Imr 7977 Available in Stock - Ammo Depot Ma Experimental IMR Enduron Powder Loads - Discussion & Results Loading density is perfect for magnums, contributing to superb uniformity. 6.5 PRC Load Data - Shooting Times 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. I have 4 shooting buddies that run RPR's. Reloading for the 338 Lapua Magnum | The Hunting Gear Guy It yields outstanding performance in such cartridges as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua and a host of others. SAAMI . (Please refer to out " Reloading Tips " for proper measurement techniques) If possible, we recommend that you determine the COAL of your rifle, and load your bullets at 1mm short of the lands. The IMR brand was first introduced under DuPont in the 1930s. Just couldnt get under 0.8 moa. 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. When will it be back in stock? This testing was with Hornady 285 ELD-M with Alliant Reloder 26. Works great in a 7mm Remington Magnum cartridge out of a Winchester Stainless Model 70 using 136 gn Hammer (sledge hammer) bullets. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. I had been using Hornady 250grn BTHP and have been unable to obtain. For a better experience, please enable JavaScript in your browser before proceeding. RCBS #14. Reactions: Evlshnngns. 1. It may not display this or other websites correctly. The IMR Enduron Powder load data published by this website is intended discussion . Lee #5. . JavaScript is disabled. 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. The IMR series of handloading powders were the only choice to wring full performance out of rifle calibers. VAT (where applicable), shipping costs and possible delivery charges. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. With 285 ELDs I hit hard lift at 91 grain. That's suprising. Mark . The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. Lee #25. Thank goodness we do not have a .338 Lapua, as Jim's shoulder would not handle the punishment! This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. IMR load data | xxl-reloading.com hope this helps . The 33 Nosler case holds 88.3 grains of water. I did see Hodgdons data, but unfortunately they only list the hornady SP bullet. Ok, but just to give you some perspective You must log in or register to reply here. I sure wouldn't want to do without it . it should give the highest velocity without showing signs of over pressure . It's hard to pick favorites, but for powders, IMR 8133 was a standout with almost all loads tested in my rifle. IMR reloading data - Balistix Bullets Share your experiences with other customers. We do not take backorders and our Tech Services team cannot take orders via email or phone. Magnum, .300 Wby. The IMR brand was created under the DuPont Corporation. Find load data for IMR 7977 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR End. I shot five rounds and at 100 yards and I got a group that was less than 3/4 of an inch. Find load data for IMR 7977 Enduron propellant by clicking the button "Loads for this Powder". VihtaVuori N150. I love it! I have H1000 which I have tried with no luck. The slowest burn rate Enduron Technology extruded powder and a true magnum cartridge propellant. You must log in or register to reply here. US869 is a dense propellant that allows the shooter to use enough powder to create maximum velocities in cartridges such as the 7mm . Just for comparison's sake, the 338 Federal will send a 215 grn bullet out at 2500 fps, the 338-06 . The length of the neck is just about one bullet diameter at 0.329 inch. I get 2800 fps with a 300g Berger in my 30 inch barrel. here is the powder chart . IMR 8133 IMR Enduron 8133 is the slowest burn rate in the Enduron family. https://www.snipershide.com/shooting/threads/new-338-lm-loads.6955101/. We continue to prioritize our shipments to our traditional sales channels to maximize powder availability at retailers. The store will not work correctly in the case when cookies are disabled. 160 gr. .338 Lapua Magnum (Hodgdon Data) reloading data with 170 loads. This website uses cookies to ensure the best experience possible. They are suitable for a wide variety of cartridges, from small varmint cartridges all the way up to the .338 Lapua Magnum. 8. IMR 7977 | Powder Valley This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. . Matching Maximum Pressure: 60916 psi, or 420 MPa . To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. I had no luck with my factory RPR barrel. Submitted Loading Recipes Show all Submitted Loading Recipes Tipstrike Experiment in 7x66 Vom Hofe Preparing 204 Ruger Norma Brass . IMR Enduron 7977 is a slower burn rate in the Enduron family. Ive been working on trying to get my 338 to shoot better. I'm using RL33 with 300 gr berger hunting bullets . Imr 7977 | Long Range Only I too am interested. New customer? The slowest burn rate Enduron Technology extruded powder is IMR 7977, and is a true magnum cartridge propellant. With 7977 I discern no difference between CCI 250 or Fed 215 . Full Member. . 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. # Imr 7977 Load Data For 338 Lapua - Imr 7977 We place limited powder inventory for sale on a regular basis on our website. Charge weights are nearly identical to H1000, which i understand 7977 is supposed to be similar too. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. The components I currently have are VihtVuori N560 Powder and Sierra 250 Game king & Sierra 300 Match King bullets. I just bought the newest update Dec 2016 , it cost about $22 shipped to my door . 7977 uses almost exactly the same data as H1000 with very similar speeds. Shellholders: Hornady #5. 338 Lapua and IMR 7977 | Sniper's Hide Forum New Products. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. Buy IMR 7977 Powder | 1,8lbs - Don't Miss Buy Now! Cabelas in Wheeling had the new powder in stock last Saturday. 338 Lapua - Ultimate Reloader 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. Mag. 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. Vihtavuori's N550 rifle powder was originally developed for .30-06 Springfield and .308 Win. Reloading data for 338 Lapua Magnum. snoopy happy dance emoji 8959 norma pl west hollywood ca 90069 8959 norma pl west hollywood ca 90069 Access from your Country was disabled by the administrator. It yields outstanding performance in such cartridges as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua and a host of others. To put that in perspective, the 338 Win. During this time of overwhelming demand, our team is doing everything possible to produce more bullets and ammo than ever before. I have had good luck with 4451 in 6mm Rem with 90 gr BT and 7mm Rem Mag with 150 BT. Accurate .338 Lapua load? | Sniper & Sharpshooter Forums is essentially the 6.5 mm Swede (btm.) Thanks fellas. Loading density is perfect for magnums, nicely filling . *Recommended Powder C Compressed Load 2 . IMR 7977 90.0 MAX. Tips For Reloading The .300 Norma Magnum - Gun Digest Bottom line, I like it so far. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Lapua's Scenar-L bullet is the result of decades of experience and state of the art manufacturing capabilities combined with extensive testing. Im hoping to try 250gr berger EH, 285eld-m, and 285 BTHP. I'm using H100 with 300 gr and it's very accurate. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. IMR 4831 92.4 72.7 4.71 2519 100.0 60916 8941 1.444 !DANGEROUS LOAD-DO NOT USE! Good luck with the new set up. Yields outstanding performance in such cartridges as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua and a host of others. IMR 7977 in 338 Lapua | Long Range Hunting Forum .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 . For more information, go towww.P65Warnings.ca.gov. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb . I've been working on trying to get my 338 to shoot better. I have H1000 which I have tried with no luck. Comprehensive load data for IMR 7977 Enduron reloading powder und technical specifications for this propellant. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. DuPont founded the company. 338 Lapua Magnum Load Data - Nosler 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. Hodgdon Powder Company operates following Biblical principles to honor God. Sign up with your email address to receive news and updates. DuPont had historically been a major supplier of military propellants long before becoming one of the handloaders favorite powders. Improved Military Rifle IMR 7828 SSC. I picked up some IMR 7977 to try some different bullet/powder combo's but I'm not finding much data. mdslammer Sergeant. Loading Data . When we are sold out, we are sold out. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb . We appreciate your patience and continued support! Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. Very fast flat shooting powder. Went to Cabela's Saturday and scored 100 rounds of Hornady 285 grn BTHP. Berger Elite Hunter & 285 gr. 338 LAPUA MAGNUM | Reloading Data for handloading ammunition IMR Enduron 7977 is a slower burn rate in the Enduron family. I have not ran 8133 in 338 yet. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum . Have been looking at the 7977 for my 270 with the Matrix bullets. IMR is a brand in the Hodgdon Powder Company lineup. JavaScript is disabled. The first IMR reloading powders included ever popular favorites IMR3031 (1934), IMR4064 (1935) and IMR4350 (1940). .338 Lapua Magnum - Published Manufacturer Loading Data. Let me know if you want to sell the barrel. Magnum and .338 Lapua. either expressed or implied is assumed for the use of this data. Some 7977 load data here. Loading density is perfect for magnums, contributing to superb uniformity. 14 rds from my 338 Win Mag Rem 700 XCR. 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). Reduced Rifle Loads. In the Hodgdon manual it has the best velocity in a 338 Lapua of any of the powders they tested at 93g at 2688 fps. Scenar-L - Lapua Jim, I understand this is an old thread, but want to reply anyway. with a shortened case body. Reference Data - IMR I was amazed at the velocity witch was more that I was supposed to get with 71 grains. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. More about this powder: IMR Enduron 7977 is a slower burn rate in the Enduron family. I hit Harold bolt lift around 93gr. PDF 338 Lapua Magnum - Barnes Bullets Reply. It may not display this or other websites correctly. 26. Subscribe to the free newsletter and do not miss any news or promotions. Improved Military Rifle IMR 7977. With the bullets touching the lands 69 grains gave me an average velocity of 3140 ft/sec.. Hey guys, does anybody have any IMR 7977- 338LM data? .338 Lapua Magnum (using Sierra bullets) - Load Data Improved Military Rifle IMR 7977. Near Maximum ! Find load data for IMR 7977 Enduron propellant by clicking the button "Loads for this Powder". IMR Enduron 7977 is a slower burn rate in the Enduron family. 338 Lapua Magnum; 338 Remington Ultra Magnum; 338 Winchester Magnum; 338-06 A-Square; 338-378 Weatherby Magnum; 340 Weatherby Magnum; 35 Whelen; 350 Remington Magnum; 375 Flanged; 375 H&H Magnum; 375 Remington Ultra Magnum; 375 Weatherby Magnum; 378 Weatherby Magnum; 40 S&W; 404 Jeffery; 416 Remington Magnum; 416 Rigby; 45 Auto (ACP) 450 Rigby . I am starting with the 250 gr bullets and according to Sierra's load data, my range is from 82.1 gr @2750 fps. . The 6.5 mm Creedmoor (top.) Need 338 Lapua Quick load help. - 24hourcampfire We offer a wide variety of cases and bullets for hunting, sport shooting, target and tactical purposes. Be the first to share your insights. I'll check with him and PM you if you dont mind. No reviews found. We use CCI. These loads were shot by Brian Pearce of Wolfe Publishing Co. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing . 338 Lapua Reloading Struggles | Rokslide Forum IMR 4451 and 7977 Enduron Powders | Long Range Hunting Forum Most of my guns will not shoot a tight group without some. IMR 7977 is comparable to Hodgdon H1000. 56.0 grns behind a 100gr NBT got me 0.5" at 100 with 3156 f.p.s. 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. I'm not very computer savy , so if I can figure out how to use it , anyone can . IMR 7977 - Reloading Unlimited Sierra SBT COAL: 3.575 inches; Sierra HPBT MatchKing COAL: 3.680 inches. In 2003, Hodgdon Powder Company acquired the IMR brand bringing these prestigious powders under the umbrella that also includes Hodgdon, Winchester and GOEX. When we are sold out, we are sold out. Powders include IMR, Hodgdon, Winchester 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: . I paid about $160 for it originally , and have bought many updates over the years . You are using an out of date browser. just to show how easy you can gather this info I ran a 338 lapua with a 300 berger elite hunting bullet . I wouldn't say it's a better alternative - it's on the slow side. The IMR series of powder is trusted by reloaders all over the world and is suitable for a wide range of reloading applications. Shooter's Reference Load Data for .338 Winchester Magnum For example, berger lists 90gr of H1000 as the max charge. . 338 Lapua - Hornady 285 ELD-M and Reloder 26 Load Test Blog. Consistent performance . Every week of WW II, as many munitions were used as in all of WW I. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. In this video we discuss reloading the Savage 110 BA stealth in 338 Lapua Magnum. In doing so, we deal with integrity and honesty . It may not display this or other websites correctly. I picked up some IMR 7977 to try some different bullet/powder combos but Im not finding much data. Improved Military Rifle IMR 8208 XBR. For a better experience, please enable JavaScript in your browser before proceeding. I'm hoping to try 250gr berger EH, 285eld-m, and 285 BTHP. Loading density is perfect for magnums, contributing to superb uniformity. Hogdon's 2015 annual load manual has data and some good articles on them. IMR 7977 Enduron 109.2 77.7 5.03 2708 89.3 60000 8519 1.264 ! For the best experience on our site, be sure to turn on Javascript in your browser. Loading density is perfect for magnums, contributing to superb uniformity. Jun 3, 2010 202 11 Las Vegas . Works great in a 7mm Remington Magnum cartridge out of a Winchester Stainless Model 70 using 136 gn Hammer (sledge hammer) bullets. 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. online shopping has now taking into account a long way; it has untouched the quirk consumers and entrepreneurs reach issue today. 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. 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. 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 . PDF 338 Lapua Mag - 265 grain 338 Cal. (.338) - Nosler Really consistently accurate results. here is the Data I found of Hodgdon's site. We do not take backorders and our Tech Services team cannot take orders via email or phone. Retumbo was 94g at 2654fps. Feenix: I just posted this in response to a similar question by NavyChief. if you're serious about reloading and shooting I really recommend it . 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. imr 7977 load data 338 lapuathe renaissance apartments chicago. IMR Enduron 7977 is a slower burn rate in the Enduron family. Reply. I tried 250gr Bergers and 7977 in a pressure test. IMR 7977. Have new brass, Hornady, and primers . . Hornady ELD-M; Primer: 215M; Brass: Lapua; Powders: H1000 & IMR 7977; I have messed with seating depth loading all the way up into the lands and then backing my bullet out all the way to thirty . IMR 7977 powder is a magnum propellant with the slowest burn rate of the Enduron powders. IMR 7977 in 338 Lapua | Shooters' Forum You are using an out of date browser. I love Hodgdon, but I think 97gr is dangerous in most 250 class bullets. We use cookies to make your experience better. RL33 is working great in my 338 RUM with the 300 EH. for stuff like this it is worth double the price . Trail Boss Reduced Rifle Load. Resources. Ac c uB ond Lo n g R an g e 0 .7 3 2 IMR Enduron Powders - CHUCKHAWKS.COM I am finally starting to play around with different loads for my .338 Lapua. It performs admirably in cartridges such as the 300 Winchester Magnum, 7mm Remington Magnum, 338 Lapua, and a variety of others. 2796 88.0 * 2712 86.0 2628 H1000 93.0 MAX. Please help us to improve and report any suggestions via our contact form. I use 98 grains in a 31" 300 RUM. Hogdon's 2015 annual load manual has data and some good articles on them. Only did a velocity check on back behind the garage. Reloading- What pressure signs do you stop at. it takes all the guess work out of the "what if " questions we reloaders have . Minuteman. IMPORTANT: Please view the special notes by clicking here. Hope it helps. 26.0 inch = 660.4 mm Predicted Data for Indicated Charges of the Following Powders. Sign up to get updates and access to exclusive promotions. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. Reviews can only be submitted while being logged in. H1000 is supposed to be extremely close to IMR 7977. Keying in on the PRC's role as a big-game cartridge, I concentrated on loads with high-BC bullets.