I’m debating on getting a Glock 40 or getting a Lone Wolf 6”/9” drop in barrel for my Glock 20 for 50/70 yards deer hunting. Do you really gain anything?
I suspect 60-80 FPS difference between a Glock 20 and Glock 40 with the same ammo. Here is a link to a thread on GT forum where someone posted a lot of 10 mm chronograph results.