Quack, I'm not the zealot & purist you are, and ME-T are my hull of preference, while noting some potential basewad issues that I accept. :: shrug ::
That said, you need to check your purism at the door when talking abt straight-wall hull-data.
The volume of all ('sporting' to avoid word-games abt buckshot, slug and tactical loads) low-basewad straight-wall 2¾" hulls varies no more than a ML or two ± from a FGM, and even when using bulky powders, making a good bullet is never an issue.
While you CAN have some pressure issues in tapered hulls - which is why you NEVER load REM with AA data & vice-versa - those issues don't exist in straight-wall 'sporting' hulls, and FGM data is universally accepted as safe and reliable.
Primer-fit/slop issues are largely non-existent in <i>current production</i> lots of hulls & primers. The 'slop' issue was always more abt shape, lead and taper than it was abt diameter, and the dimensional differences have been reduced. That said: Wolf, RIO, UEE, NS/RWS/Diana primers seem 'fuller'.
My experience is to stick F209A (the only primers I own) in the rainbow ME-T (plastic + paper, of course, mixed) hulls and go shoot. I've never had a primer fall out, nor have I had one gas-ring (that I have noticed).
Bob