This probably will be +P or +P+ to get that velocity with that heavy bullet in a 9mm.I was looking for some subsonic ammo today and stumbled across Seismic Ammo… they make a 185 grain JHP in 9mm that still hits 900-1000 fps. I was intrigued and wondered if anyone here had tried it out!
Seismic Ammunition | High Mass Ammunition
seismicammo.com
1050-1100fps with 147gr is +P.
This is basically taking a 9mm to a 40 Short & Weak level.