The .350 Remington Magnum
By Chuck Hawks
The .350 Remington Magnum was the first true short magnum cartridge, and it was introduced in the mid-1960's. By the 1990's the cartridge had fallen on hard times, and for a while Remington quit factory loading .350 ammunition. But the introduction of the WSM and SAUM short magnum cartridges in the first years of the 21st Century revived interest in the .350 Mag. and Remington reinstated it on their loading list, along with a new rifle to shoot it.
The new Remington factory load for the .350 Magnum, which uses a 200 grain Core-Lokt PSP bullet, claims a MV of 2775 fps. The muzzle energy of the new load is 3419 ft. lbs. The trajectory of that load should look like this: +2.7" at 100 yards, +3" at 125 yards, +1.3" at 200 yards, -3" at 260 yards, and -7.3" at 300 yards. The maximum point blank range (+/- 3") is thus 260 yards.
I have had quite a bit of experience with the cartridge, as I was selling sporting goods in the mid-1960's and special ordered for myself what I believe was the first Remington Model 600 rifle in .350 Rem. Mag. caliber shipped to Southern California. I have handloaded the caliber ever since.
In my Remington and Ruger .350 Mag. rifles, IMR 4895 and IMR 4064 powders have given good performance and accuracy with all common bullet weights. Win. 748 powder is a top choice for maximum velocity with heavy bullets. Favorite bullets include the Speer Hot-Cor 180 and 220 grain Flat Points and the Sierra 225 grain GameKing SBT.
Here are some vital statistics about the .350 Rem. Mag. of interest to reloaders. The maximum permissible pressure is 53,000 cup, maximum COL is 2.8", maximum case length is 2.17", and the correct bullet diameter is .358".
According to the fifth edition of the Nosler Reloading Guide, handloaders can drive the 180 grain Partition HG bullet to a MV of 2632 fps with 57.0 grains of IMR 4064 powder, and a MV of 2824 fps with a maximum load of 61.0 grains of IMR 4064.
Reloaders can drive the 225 grain Nosler spitzer bullet to a MV of 2535 fps with 55.0 grains of W748 powder, and a MV of 2700 fps with 59.0 grains of W748.
The Nosler 250 grain spitzer can be driven to a MV of 2374 fps by 54.0 grains of W748, and 2571 fps by 58.0 grains of W748. These Nosler loads used Remington brass and CCI 250 primers and were tested in a 22" barrel.
One interesting alternative for the reloader is to turn the .350 Mag. into what Jack O'Connor described as an ideal brush and woods cartridge using reduced power handloads. O'Connor suggested a 225 grain flat point bullet at a MV of 2400-2450 fps.
In a .350 Mag. case, 56.0 grains of IMR 4320 powder will drive a 220 grain Speer flat point bullet at a MV of 2447 fps from a 22" rifle barrel. The Speer technicians used Remington cases and CCI 200 primers when developing this load.
The trajectory is such that the bullet can be zeroed to strike dead on at 200 yards, giving a maximum point blank range of about 235 yards. The recoil energy of such as load is around 20 ft. lbs., managable for a medium bore rifle.
Note: A full length article about the .350 Rem. Mag. and .35 Whelen can be found on the Rifle Cartridge Page.
Copyright 2004, 2015 by Chuck Hawks. All rights reserved.