Honorable mention .......
Rimmed cartridges most notably 303 Britt will benefit from an 0 ring placed in the rim groove that forces the case back against the bolt face . 303 is notorious for very fat chambers and profiles that don't exactly match drawings .

In cases like 7.7 Japanese that can be formed from 06' but will be small at the base a lap or 2 of half width Scotch tape as needed will help center the case during fire forming and hold the case back also . Any depression left will fill out the second firing .