I tried them but there CCI 250LRM primers labored improved in my rifle plus the mags are improved up below do to looking at -forty temps We examined masses at both utmost normal pressures and in the setting up hundreds (some labs compute CCI BR2 PRIMERS start out masses — https://landenrfrjt.goabroadblog.com/30822665/rumored-buzz-on-federal-210-large-rifle