Good to great results with everything I've tried so far.
Colibris act like a pellet gun (quieter than some) and may not get through a pigeon's wing. Super Colibris are more useful for the small pests. Caught a medium sized squirrel up to no good - through the shoulder at about 30' DRT. Won't feed the last round from a Ruger rotary magazine. I leave an empty in the mag to give a little lift to the last live round.
Sniper Sub Sonics surprised me with a 3" group at 100 yards without key-holing in my 77/22. Great for kicking up pine cones, rocks, etc... Will "over penetrate" in a good way on small critters. Need to get more.
Tried some of the "Supermaximum Hyper Velocity" and it severely dented my steel rimfire target. Nothing else left more than a splash of lead except for a slight depression from the heavy Sniper Sub Sonics. A second hit in the same place would have went through. Looked like I used my .22 Mag on it. I wouldn't be surprised if it did overlap into lower end .22 Mag territory. Fun stuff.
