Hate to drag this up from the dead, but this post continues to come up when I'm looking into ammo for my comped g19.
I just wanted to throw this video out there as a proof of compensator function on a data driven level...
https://youtu.be/bUY2bHTf8i8
Ammo will make a difference but I think you should try a few different types, reloading your own or not.. And find what works for you and your comp setup.
In my case, I have a g19 I built, not specifically for competition, just for me.. And I am going through this process. I bought a bunch of Winchester whitebox 115g a while back when I knew I was getting into a 9 and after the comp installed I had a lot of stove pipes, failure to feed, eject, and fire. I've since gotten a new ndz spring kit and changed my striker spring back to 5lbs from 4.5(i think the white box ammo just isn't reliable on 4.5lb spring). But atm it's reliable with a 15lb recoil spring, on that ammo.. I intend to get small batches of 124 and 147gr ammo to test and see if theirs any combination of ammo & spring weights that I like that run reliably and then start getting into reloading. I have 0 reloading equipment or experience so I'd like to find a round to mimic at first to learn.
