7mmwsm

  1. B

    Primer ?? in 7mmWSM

    I came accross 2000 Remington 9 1/2M primers. I have been using Fed. 210M's under 62.0 4831sc, Berger 180 VLD's. My question is, if I switch to the 9 1/2 magnum primers should I change my load any? What difference should I expect in performance? Thanks for reply's and no I can't sell them.