Buffalo Bore loads their ammunition with the highest quality components available to maximize the performance of the ammunition. This ammunition is safe to use in all 357 Magnum chambered firearms with steel frames that are in proper working condition. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.
Owner of Buffalo Bore Tim Sundles on Buffalo Bore Heavy 357 Magnum Ammunition:
Our 357 mag. ammo adds more power than ever before to the 357 mag. This ammo is safe to shoot in ANY all steel 357 revolver – this includes J frames. This ammo is no harder on your gun than any other normal 357 ammo. Please don’t phone us and ask if this ammo is safe in your gun. It is, providing your gun is in safe condition for use with any normal 357 ammo.
We don’t recommend this ammo to be fired in super light alloy revolvers as bullets may jump crimp under recoil, but the ammo itself wont hurt these super light weight revolvers. These revolvers are simply so light that the recoil is severe enough to cause crimp jump.
The below velocities are offered so that you can see what guns/barrel lengths give what velocities with this new 357 mag. ammo. You’ll notice that new S&W revolvers with short barrels are often shooting faster than older S&W revolvers with longer barrels. The new S&W revolvers are very good and are made with equipment that makes them more consistent and faster than the S&W revolvers of yesteryear.
1. 3 inch S&W J frame
19A/20-180gr. Hard cast LFN = 1302 fps
2. 4 inch S&W L frame Mt. Gun
19A/20-180gr. Hard cast LFN = 1375 fps
3. 5 inch S&W model 27
19A/20-180gr. Hard Cast =1398 fps
4. 18.5 inch Marlin 1894
19A/20-180gr. Hard Cast = 1851 fps
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