Quote Originally Posted by Gamocfx View Post
I wonder if a MK5 or 6 Airsporter still had the same shallow grooves? Would a MK2 Vulcan or the C1 suffer as well?
Yes, and yes. And lots of others, including Dianas, BSFs, etc.

FWB and HW happened to have the best system. In both cases originally designed to secure near-zero repeatability when detaching/attaching match diopters. Stroke of fortune that they adapted well to scopes using specialised mounts.

The best innovation back in the day we’re Theoben’s fixed mounts. Though they can give eye relief problems.

Sportsmatch 1PM or, if you must, BKL, usually fix the problem.