Buy Underwood 357 Magnum Ammo online – 20 Rounds of 158 Grain JHP Ammunition
Buy Underwood 357 Magnum Ammo online – 20 Rounds of 158 Grain JHP Ammunition from licensed firearms deals at the best rates. Primer firearms deals is a trusted supplier of handgun ammo especially the Underwood 357 Magnum Ammo. The final rendition of S&W and Winchester’s .357 Magnum bullets took the .38 Special casing and extended it by one-eighth. They kept the same .357 diameter bullet (the actual bullet size of the .38 Special) and packed a little more power at a slightly higher pressure into the 357 shells.
This casing extension didn’t just give its creators more space for powder, it also made the .357 rounds impossible to fit into firearms chambered for the .38 Special, which most likely couldn’t withstand the power of firing the bullet.
Design of the .357 Magnum
The first cartridge held a 158 grain (gr) bullet and shot the semi-wadcutter load at over 1,500 fps out of a larger N-frame revolver with an 8 ⅜ inch barrel. To further test the .357 Magnum rounds and firearm, which would eventually become the S&W Model 27, Wesson took the revolver and ammo on a big game hunt in Wyoming during the fall of 1935. Proving the effectiveness of the cartridge, Wesson harvested antelope, moose, elk, and even a grizzly bear with the new firearm and cartridge.
The .357 Magnum revolver went into production and the first one to leave the factory with the serial number one, was given to J. Edgar Hoover. After its release, the .357 Mag spent 20 years with the title of the world’s most powerful handgun cartridge.
357 Magnum Ammo For Sale