So I have my Glock 20 set up for my can now. Now I'm looking for a subsonic round that makes use of the 10mm capacity. 200gr rounds are great, but with the cartridge length and case volume, I'm thinking a much heavier bullet could be pushed around 1000fps. Say, something in the 260+ range? Maybe? Maybe that's just too big but if it is slowed down to subsonic speed, bigger is better. Anyone seen anything like that I could use to start working up a load?
Last edited: