Col. Harrumph
Member
Correct! Bullet shank diameter > gas check internal diameter; a fairly common problem as there are no SAAMI specs for either. And anyway a spec on cast bullets would be impossible to enforce.Gas check expander. You have gas checks that won't fit? I must have not read correctly.
I should add, kudos to McMaster-Carr! I ordered the bolt last Thursday (1 Feb), was told it'd arrive the following Monday, and it did arrive today (3 Feb).