At last I got out and shot with my 4.5x14 Leupold vxIII with Boone and Crocket Reticle. I was shooting an H-S Precision .300 win mag with 165gr ballistic tips at 3400fps. I measured all the ranges with my Leica 1200 scan rangefinder. I zero'd the rifle at 250 yards then shot 3 shots at each aim point on the rifle. I figured them out to be 250 on the crosshairs 350 at the first aim point 500 at the second aim point 550 third aim point 600 for the bottom post After shooting 3 shots from each position I measured the group for all 15 shots and it was 6". Maximum verticle dispersion was 4". So for my rifle with my load the reticle works great! Of course it helps when the rifle shoots a 1" group at 250 2" group at 350 and a 4" group at 500 and a 5" group at 600.