We shot mine today loaded with 135,136,137, & 138 grains of Hogdon 50 BMG the 138 load was 3333 on average and made one ragged hole at 200 yards seemed good to me. They were loaded with 300 grain Lapua BTHP. There were no signs of over pressure on the cases. We shot these through my AWC .338 Thundertrap and the recoil was just fine like a .308 IMO. PG