Does anybody have a general idea of what kpa pressures a 200 or 220 grain .40/10mm rounds loaded for minimal gas expansion pressure? My 9mm silencer actually has slightly larger than 10mm channels, and I thought maybe that a .40 or 10mm loaded heavy with sub sonics speeds would work fine through the can just like the 200 and 208 grain .300 aac blackout ammo I use with it runs flawlessly. I don't know if .40 SW is common in commercial loads for subsonic suppressor use but the issue is whether it stays below a max of 40k kPa. I figured handloading the ammo it may be possible but I'm not experienced with handloading personally.
