A 338 cal 300 SMK at 2790 FPS has 200,880 rpms in a 10 twist barrel. The 9 twist barrel with the same velocity will have 223,200 rpm. This gives the 9 twist 22,320 more rpm’s.
Still can't follow. How does fps become rpm? Wouldn't you multiply by 60 to get rpm?I can't believe rotations in seconds would remain a constant for a long distance shot.
