Quote:
Originally Posted by twofifty
Dale your wildcat load development process is interesting.
You kept increasing the charge after a low charge detonation (ok, I get that bit). Then increased it again after .008" case head expansion and the primer soot ring....till the pressure indicators went away and accuracy increased.
I don't imagine this approach is applicable to developing book loads?
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Starting load was 58 gr and that's where the .008" extractor groove expansion and primer soot happened. 58.5 not as bad, 59.0 improving 59.5 no extractor groove expansion no cartridge scuff marks from bolt-face. Retumbo charges at less than 90% full should not be attempted.
Calls to Hodgdon's "tech line" could not or would not verify my findings with Retumbo.