Thanks guy's, this all helps I'm shooting 64grns of 4350 and a 120 nosler and a buddy gave me around 100 120grn ttsx , I never sat down at a bench and tried for groups, but I did shoot at 1inch circle 3 times one day and it was very usable, under half inch at 100 and picked up 2 rounds and put them in the magazine totally unaware and killed a couple yotes at 150 to 165 yds same day and just loaded the barnes in same seater length as the nosler , and noticed what I had done, and checked another barnes I had loaded, and colored it with a black sharpie, chambered it and it also was just touching the lands, with no tight bolt or primer problem so I thought when I finish these 25 nosler's off I may go to the range and fire a few