I've been putting these magazine marking bands on any mags I load with .300 BLK. To date, I have only used my .300 BLK for hog shooting, but I am about to experiment with 6.5 Grendel for that.
The only issue that I have had with feeding is that sometimes when chambering the first round, if the rifle is at a downward angle, the round will outrun the bolt and not seat in the chamber properly.
The only issue that I have had with feeding is that sometimes when chambering the first round, if the rifle is at a downward angle, the round will outrun the bolt and not seat in the chamber properly.