Arizona, Thanks for the welcome. The A Square 458 loads shot 1" groups at 50 and 80 meters out of my double. I am very lucky--my Beretta seems to shoot all factory loads well. The 338 A Square loads grouped at 1 1/2". The other loads came in at under 1". Superior sent me some 338 Woodleigh rn loads that also chrono at the published velocities and grouped at 1". Regards.