05-19-2012, 01:51 PM
I am by no means an expert, but I got a .223 gas gun to shoot consistent at 600 last time out until wind picked up. I feel really good about having 54 grains extra weight and a lot better BC. BTW I was shooting 69 gr SMK over 25.3 grs varget and BR4's, LC brass , Off top of my head I think BC is @.300 or little higher at 2740 fps. I cant wait to get the grendel going and try it out!
