vtmarmot
P Magoon, Livin' Free NH
I recently prepped 100 new Lapua 6 BR cases, all identical from the same batch. I seated 6 different types of bullets, ranging from 60 grain Sierras to 88 grain Berger varmint. All were flat base, all measured .243 and a skooch and all took about equal seating pressure except the 80 grain Berger varmint. That took quite a bit more. I am not sure why. Perhaps because it had the longest bearing surface and was seated the deepest? The 88's do have quite a long pointy snout. Any other ideas why?