powder charge

  1. B

    Stuck case in chamber

    I recently had a proof barrel put on my .300WM Sendero. I’m working on developing a load, and have yielded good results from 70gr of IMR4831, with a Nosler AB 180gr. In fact that is the same recipe for the weapon prior to adding the new barrel. Here is my “hmmmm” moment. I had no indication of...