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Yup, trim length is steady, and fired cases chamber tight, slight resistance as the bolt is cammed down.
mehavey: Understood, thanks! I'm thinking at this point then, that since trim length is steady, then this must be shoulder enchroachment
flashhole: I think you nailed it!! Great intel right there. Sounds like time to anneal and shoulder bump.
'Guffy: Here are the vitals:
Savage .204 ruger VLP bolt (appx 1,000 rounds)
Nosler brass
7x fired, neck sized after each firing (therefore 7x sized)
Brass weigtht is 99.3 - 100.4 gn within 50 pcs, at initial weigh-in (after 1st firing), and consistent through all firings (@ 99.4 -100.6gn, I'm associating that to burn powder residue that stays after tumbling)
VLD chamfered
no flashole prep
No trimming at all, 1.838" +/- .002"
Fed small BR primer
Benchmark powder
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