There was some discussion about problems with the WSM series of cartridges producing excessive pressures in the Encores when they were first introduced years ago. I remember a discussion on the YO Ranch Hunt between a representative of Virgin Valley Custom Guns and one of the Winchester reps. re: two different chambering specs. for the 300 WSM cartridge. Do not remember the final outcome. Never had a problem with my 300 WSM Striker.
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