I've finished a 338 Excalibur project and it is shooting very well. The 300 grain Rocky Mountain bullets shot just under 3 inches at 1000 yards(three shot). I've shot the 300 Bergers with the same load as the RMB and the Beger was 30 inch higher but not quite as good of grouping. I didn't change the sight in, just went out to 1000 and shot. Not sure if the Bergers had more fps or if it was all BC. This is a Savage 338 Lapua action with a new Savage barrel installed. With 120 grains of 50BMG and a 26 inch barrel I'm getting 3075 fps. I my be able to push it a little more, but with this grouping I think not. I'm using the Vortex Razor and I'll be walking out to 2500 plus yards. This would be a good caliber for all, but the brass is very hard to find.