I've got a 28" stainless 300 win mag with a Ross Schuller 4 port tactical brake. It's a .5 moa with 208 Amaxes out to 500. I can supply load info If interested. It also shot the Hornady 180SST @ 3200+ under 1moa for factory. PM me if interested. BTW, it kicks about like a 243.
Kevin