joed: I've kind of noticed the same as far as loading to max length, but I've only tried 2.350" and .030" off my rifling. Which is 2.410+/-?. I've shot Varget and H380, but only a few loads of each, so far. Had such good luck with my first 2 loads that I haven't played with it much (that, and it's been winter). My gun seems to like light loads seated at 2.35.
33 gr. Varget, CCI primer, Win Brass, 50 gr. Hornady Vmax is a 5 shot group, an inch at 100 yds. Which isn't that impressive, but, considering it was the first load I tried, I was happy.
35 gr. H380, CCI, Win Brass, 60 gr. Hornady Soft Pt. ... shot my first cloverleaf with this one, but the other 2 shots were 1" and 1.5" away. But, I seated this one longer, and I don't have my notebook in front of me and can't recall what length I used.
I just need to go do some more shooting. I'll be buyin' the big jug of Varget.
-s