Some old wildcats and a factory 458 Win

Some old wildcats from left to right:

334 OKH developed in the late 1940's by necking-up the 300 H&H to .333 using 200 to 300 gr bullets, some variations in the cartridge neck.

350 Griffin & Howe developed in the early 1930's with their headstamp, loaded by Western. This was a 375 H&H necked down to .350 with a 250 gr bullet at 2700 fps.

458 Winchester as a sample

475 OKH developed in the mid 1950's, using a 375 H&H necked-up, 600 gr bullet at 2250 fpsAttachment 17595