Tell you what, old bullets 15 thou off the lands shoot 1 moa and cases extract without the slightest difficulty. New bullets seated to the same depth are 15 thousands into the lands and I have to pry the bolt handle open
Pretty sure I'm not overthinking it
Which powder are you using. Extruded powders can take a lot of compression with no ill effect.
With any of the stick powders,just seat the bullets 30/1000ths deeper and rock on. I would put a couple over a chronograph to see exactly what is happening.
One of the best loads I ever worked with was 63 gr H4831 behind a 190 Hornady btsp in a 30-06. Now, that is a compressed load.
