.250 O'Neil Magnum
Revision as of 18:54, 20 September 2022 by Admin (talk | contribs) (Created page with "The '''.250 O'Neil Magnum''' was a wildcat cartridge created around 1936 by Con Schmitt and Charles M. O'Neil, the latter being the cartridge's namesake.")
The .250 O'Neil Magnum was a wildcat cartridge created around 1936 by Con Schmitt and Charles M. O'Neil, the latter being the cartridge's namesake.