Thanks Larryo_1. You can "blab"anytime to feel the urge - I've read some of your posts and appreciate them. In fact I followed a some of yours and Hobies suggestions when choosing and reforming my cases.
I'm pretty sure (99%) my findings were due to new unfired 348 cases. I looked over the cases and pics, and it is obvious the 50 AK cases are expanded to a much greater degree, thus holding more powder. None of my cases have been fired more than once each, and this last lot contained once fired 50 AK vs. reformed but
not fire-formed .348 cases. I learned a lesson, which is good. Learning something new each day is always a good thing!
I'll shoot these as they are loaded, and I have about 65 more .348 cases I'm going to fire-form next time out, just to get them expanded some. As much as I like shooting these rifles, I like to keep a good supply of loaded ammo on hand
My ultimate goal is to get one load that works well for hunting, and one load for just fun shooting (target). I've never used Swiss1½, but that sounds like a great load! Have you ever used 325 gr. bullets? That is what I've loaded all mine with - got 'em from BA.
Thanks everyone for the input and replies.