Home Forums Hunting & Shooting Hunting Rifles 358 NORMA MAGNUM

Agree with RickF on the use of the 300WM cases. I had a custom reamer made up about 10 years ago that pushes the shoulder forward a bit and blows out the shoulder diameter to get max case capacity. Fair amount of trouble but I get 2800 fps with IMR4350 and 250 grain bullets from my 22" bbl. duplicating 358NM specs in a 24-25" bbl. The cases form easily on first firing with exact headspace and I can use the much cheaper 300WM cases. The rifle is 8 lbs with a 2-7x scope, no brake and kicks enough to get your attention, but easy to shoot off the bench when needed without discomfort. Great medium cartridge, very accurate. IMO you don't need a brake if you're used to shooting standard weight 375 class rifles.