Author: britrifles
Subject: Chamber Space
Posted: December 04 2023 at 3:46am
There isn’t much point on measuring the throat, except perhaps to rule it out if the rifle does not shoot well.
Subject: Chamber Space
Posted: December 04 2023 at 3:46am
There isn’t much point on measuring the throat, except perhaps to rule it out if the rifle does not shoot well.
I measured the cartridge OAL using the method Shamu gave when the BSA barrel was new in my No. 4, IIRC it measured 3.17 inches with a Sierra 174 gr MK. It now measures (using a proper throat gage) something like 3.65 inches, yup, the bullet is out of the case neck before it touches the lands. Accuracy was still very good until just recently. I estimate 10,000 rounds thru the barrel now.
If you’re still curious about this, get a Hornady throat gage. Hornady also makes a .303 case that is threaded at the head to attach to the gage.