4T on Gunauction

[Peter Laidler]

The REAL check is this........... Collimate the grat to the mechanical axis of the tube, set range and azimuth to zero (or 1 for range) replace in the bracket and put on rifle. Both grat point and mechanical axis of bore should collimate at 100 yards. That's a true check that they were done by an expert, probably at H&H and not some back street bodger years later