We're those loads quickload, pressure tested, or old school pressure sign developed.
Have not settled on a packable bear gun for the wife and in the top three ideas is a converted kimber montana 300wsm. Was not expecting to see those speeds. A 375 ruger has 19 grains more h2o capacity operates within 1000psi, and can only better that rl15 nosler 260 load by a few fps.