133 bergers, BR2 primers, lapua brass, 59.5g H1000 and a col of 2.950 got right around 3155 MV in the barrel I chambered. It was pushed up to 60.5 by the guy who owns it. This is what worked in this barrel. Start lower and work up. 56g of H1000 ran 2901 MV. I started there.