Correct. The standard twist in European rifles is 1:220mm (1:866 inches). In the US the twist is generally 1:9.5 inches, although occasionally something a little faster is used. I believe the M70 XTR was 1:8.5 or something along those lines. I'd have to measure one to see. John (MD) can speak to the twist on the Serengeti, but I'm pretty sure it is either 1:9 or 1:9.5. I ought to measure it sometime just to be sure.
While you are at, bump the mouth of a case and invert a bullet, chamber, measure the exposed bullet and advise. I collect those measurements. Thanks in advance.
