Re: 7MM Ultramag and 180 Bergers Load Info
Some have thoughts that ball powders such as US869 impart less throat erosion than those that are course powders such as H50BMG. Usually this is not of huge concern but with the 7 rum it may be of some value if there is credibility to the assertation that ball powders are easier on throats than stick powders. That said, I use IMR7828 and RL25 in my 7rum but I'm not a true long range shooter shooting 180 bergers. Food for thought.