factory loads in Remington’s Anniversary Edition rifle. Powderi / Velocity g 2450 2500 2600 2700 2750 2800 2825 IMR 7828ssc 58.0 59.2 61.6 64.0 RE23 56.1 57.4 60.1 62.7 IMR 7977 End. The 7mm Remington Magnum is a versatile cartridge that’s well-served by slow burning powders. 61.2 62.5 65.0 67.5 Magnum … At some point, I will work with the 8 mm Remington mag as the 7977 should really do well especially with a heavy bullet. I was excited to see this because I have six lbs for my .243. The 7mm Rem Mag has a ton of potential other than merely being a hard-hitter if you handload the cartridge. It is recommended for the .25-06, 6.5mm-284, 7mm Rem. I mostly shoot sierra 140 and 160 for deer and hogs. IMR 7977 powder is a magnum propellant with the slowest burn rate of the Enduron powders. Data was shot over a magnetospeed. I was looking thru a reloading book and noticed that IMR 4064 comes up in quite a few columns/bullet weights. I have the load data from hodgen's websight, seems a bit tame. Mag. Magnum, .300 Wby. Mag. bullets and it gave good accuracy also. Next up is RL-22 which I am shooting with 160 to 175 gr. Magnum, .300 Win. I just bought a 7mm rem mag with a 9.5 twist. my cartridge length using a Sinclair comparator with 30 cal. My standard loading for the 7mm Mag is 60 to 61.5 gr. IMR 7977 is comparable to Hodgdon H1000. We decided to test this powder in .300 Win. Cartridge : 7 mm Rem. 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. Recently IMR introduced four new powders. L6: 3.290 inch = 83.57 mm Barrel Length : 24.0 inch = 609.6 mm Powder : IMR 7977 Enduron Predicted data by increasing and decreasing the given charge, My barrel is a walker with 9 1/2 twist so I shoot The Smaller bullets. of IMR 4831 with 150 Ballistic tips which has shot well in 3 different rifles. IMR 7977 for the 300 win mag norma 300 win mag brass w fed 215 primers and 208 A-max seated .025 off the lands. i started at 73.3 grs and worked up in .3 grain increments to 76.0 grs. Any load data will be helpful. To start the reloading process I shot three 7 mm Rem. Pictured is the 7977 IMR … What Are The Finer Points In Reloading the 7mm Rem Mag. Has anyone tested the IMR 7977 in a 7STW. IMR 7977 has the slowest burn rate among the Enduron Technology powders. Magnum and .338 Lapua. bullets (Nosler and Sierra) and gives me good accuracy. 7mm Remington Magnum RIFLE RELOADING DATA 9 7mm Remington Magnum RIFLE RELOADING DATA 10 INDICATES MAXIMUM LOAD - USE CAUTION LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED. It boasts a case capacity of 82 grains of water insert is 2.860 to the ogive. I have been trying to figure out what powder to buy and it seems most use H1000 or retumbo. Oh yeah, and factory twist is 9.5, the 175’s stabilize just fine - even in the weird Alaskan winter we’re having. I used and liked IMR-4350 with 130 to 150 gr. Thank goodness we do not have a .338 Lapua, as Jim's shoulder would not handle the punishment! 7mm Remington Magnum (Hodgdon Data) reloading data with 302 loads. Powders include IMR, Hodgdon, Winchester Using bullets from Sierra HP, Speer HP, Hornady SP, Speer SP, Hornady GMX, Nosler Part, Barnes TTSX BT, Hornady SPBT, Sierra RN, Berger VLD. (SAAMI) Bullet : .284, 168, Nosler Accubond LR 58623 G7 Useable Case Capaci: 71.513 grain H2O = 4.643 cm³ Cartridge O.A.L. 175 ELD-X, Norma 3x fired (fresh anneal on Annealeez), Gmm215M, IMR 7977, cbto 2.724 Weather: 34 F, 75%, 28.86, right at sea level (well, 130 above the high tide line)
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