JGS, move the shoulder/body junction ahead to get .001gr extra lolHeck yea! Who's making your reamer?
And are you going to keep the base to shoulder/body length the same and drop the neck/shoulder to make the 40 or are you going to keep the neck/body junction in the same spot and just move the shoulder/body junction forward?
I was considering doing the first option to get myself more neck length, but then I'd end up pushing shoulder material into the neck and have to deal with donuts and I wouldn't get that extra 0.001gr capacity