Quote:
Originally Posted by cycloneman
Jump to 1959, the year Winchester introduced their very successful .22 Winchester Magnum Rimfire (WMR). This cartridge pushes the limits of pressure possible with a rimfire case given the limits of contemporary metallurgy. The .22 Magnum was initially offered with 40 grain FMJ and JHP bullets at an advertised MV of 2000 fps from a rifle barrel and 1550 fps from a pistol barrel. Due to its high velocity, .22 WMR cartridges are loaded with jacketed bullets.
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Thank you for all of the imformation on rimfire .22's. Correct me if I'm wrong, but I understood that the the .22WMR was developed to achive .22 long rifle like ballistics in the then very popular Ruger Single Sixes and their clones.