378

3 boxes of 378 brass new in the box. $75 each box plus shipping

So I purchased some Berger 77 grain OTM bullets to load in my AR. I also picked up their loading manual. I used Vhit N140, RIMSHOT TAC, and H4895. I loaded everything to the specifications in the manual. When I chronographed each load with my magneto speed I noticed that I was getting 2-300...