Re: 300WM powder & velocity for 210gr bullets
Recently shot at 1,000yds. I was in the fourth relay so I shot in morning, early afternoon, & late afternoon conditions. Wind ranged from 3-12 mph. Headwind mostly from 2 o'clock. My load was 69.5grs. RL22, Berger 210vld touching the lands, Fed Magnum Match primer. 20 shot string AVG. 2,730fps, SD 21. Groups were 5 shots. 9.5"/12.5"/15.25". I was really happy at the end of the day. When going back over the chrono strip the first 7 shots had the widest swings. After that the velocity spreads really closed up but haven't refigured with the last 13 shots. Hope this helps.