I took my new Sparrow out today for the first time. Bought 5000 rounds of American Eagle suppressor ammo and 2 boxes (100 count) of Winchester Suppressor ammo. Both are CPRN and subsonic. I shot approx 200 rounds of the American Eagle ammo and the gun looked relatively clean. Once I switched to the Winchester however, I noticed the gun got dirty very quickly. After about 40 rounds of Winchester ammo, I could only fire 1 round at a time because the gun would not cycle from all of the carbon. That will be the last time I use Winchester "suppressor" ammo through the gun.

Curious what type of ammo people use with the criteria being:
-ammo must be subsonic
-ammo should run clean (I have a Ruger 22/45, which was purchased about 2 months before the push button takedown version came out. Am thinking of upgrading to that now)