Home Forums Hunting & Shooting Ask The Gunwriters Jack O'Connor wrote about the 7x57

I bought a 7x57 on a mauser action from a Gent who speced a 1:10 twist, throated for a 139 Hornady to touch the lands when seated to the cannelure.

It has a bit more free-bore than specified, which is probably a reflection of the reamer the smith had on hand.

None the less, it is capable of touching holes in 4 shot groups, which is better than I am on the average day around here...