I shot from 45.5 to 48 with berger 215's and this combo today. My chrony fell over and broke before I could fire the first shot today ( had to set it up on a slope). I hit on 2 definite nodes with sub 1/4" groups but have no idea if they were fast enough to justify shooting. Can anybody tell when what velocities I should expect from this combo? 3.107 coal, Lapua palma brass, 450 primers. Any help would be appreciated.