The RPM formula will show some dramatic differences when a fast twist barrel is employed.
Here are a few examples of rifles my friend and I have:
1 in 7 30" STW 160 at 3375 = 347,142 1 in 7 twist 30" rem mag 140 accubond @ 3410 = 350,742 rpm 1 in 7 twist 30" rem mag 180 vld @ 2950 = 303,328 1 in 9 26" 7 RUM 180 berger vld @ 3100 = 260,000
The Berger 115 VLD has been known to come apart with the necessary twist of 1 in 7.5 6mm-284 1 in 7.5 105 berger hybrid 3445 fps= 330,732 RPM 6mm-284 1 in 7.4 115 VLD 3250fps =312,000 RPM
