Does anybody know what the major diameter and minor diameter of the barrel shank threads, and the thread pitch for the CZ 550 magnum action are?

Thanks,

Dave

Dave, Metric, 60 degree (system International) M2 x28- theoretical. Working, 2 m/m pitch ( 12.7 TPI), 1.095" Major dia will usually clear,shank length from .632-.635", definitely 60 degree form.

Tom:

Thanks for the info. I have a Pac Nor barrel in .340 Weatherby that is threaded for a P14 Enfield, and I was trying to figure our whether I can clean up the shank, and rethread it for installation on a CZ action. It looks like it just wouldn't as the Enfield minor dimension is 1.085.

Dave