02 March 2006, 02:24
Rolland7 X 57 barrel twist
Could anyone tell me what the correct twist is for a 7 x 57.
02 March 2006, 02:31
olcrip7X57 rate of twist is usually 9 in 1.
02 March 2006, 05:03
Rick 0311quote:
Originally posted by olcrip:
7X57 rate of twist is usually 9 in 1.
Boy, that seems awfully fast doesn’t it?

02 March 2006, 07:09
James C Scott
Rick, LOL, you caught it too. We know he meant 1 in 9.
Theoretically a bullet exiting a 9 in 1 bore at 2500 fps would be doing 16,200,000 rpm.