Seating a bullet deeper will likely increase pressures. I shoot 40 that is loaded WAY long in my Limited Para, (1.200") and would NEVER seat the bullets deeper with that load.
Stay safe!
The pressure of those rounds is likely low to start, given that 40 data specifies a max COL of 1.135".
You're talking about a non SAAMI-spec firearm and non-SAAMI-spec loads.
