I know this doesn't answer your question but maybe it will help. I have a .22 DRS Pro with a 700mm barrel and have it set up to shoot 100yds with Javelin Gen2 .218 23gr with a reg press of 86 bar at 900-910 fps. At 20yds it just drills the same hole, at 100yds it's running just under 1" 5 shot...