carpetman2
Well-Known Member
When I chrono my 300 WM load with the Berger 210 VLD's it averages around 2920 fps. I set the chrono 15 feet from the muzzle. But when I go to the G7 Ballistics Calculator and confirm trajectory at 400 yards it wants to either change the published BC or speed up the bullet to 2985 fps. Which should I trust, my chronograph , the published BC from Berger, or the G7 Ballistics Calculator?