09-28-2022, 01:40 AM
Stone,
Understood, only a few cases are showing expansion forward of the web.
Here's a thought. Sheridan sell a rifle gauge that has been reamed to SAAMI spec. Lyman and others tend to be a bit generous in diameter to ensure all cases measure longitudinal headspace, and not give false longitudinal indications because fat bodies are jamming in the mouth. If your enlarged spent cases do not seat fully to the shoulder in a Sheridan gauge then there is too much slop in the breech.
[ATTACH=CONFIG]19143[/ATTACH]
Those Lapua cases have had countless firings, at least over 10 each.
(Disclosure: I am not Sheridan Manufacturing but was given those two gauges for comment).
Understood, only a few cases are showing expansion forward of the web.
Here's a thought. Sheridan sell a rifle gauge that has been reamed to SAAMI spec. Lyman and others tend to be a bit generous in diameter to ensure all cases measure longitudinal headspace, and not give false longitudinal indications because fat bodies are jamming in the mouth. If your enlarged spent cases do not seat fully to the shoulder in a Sheridan gauge then there is too much slop in the breech.
[ATTACH=CONFIG]19143[/ATTACH]
Those Lapua cases have had countless firings, at least over 10 each.
(Disclosure: I am not Sheridan Manufacturing but was given those two gauges for comment).