+1 to above..
I plink with them outside at about 30 yards, out of my 10-22. 16" heavy barrel.. absolutely will not cycle the bolt, but lever, and single action,they fire fine.
Compared to regular 22lrCCI SV they shoot about 4" low at the same distance, (30 yd) so had to re- aim the scope.. chroy'd a few, running about 400fps'ish... fun and absolutely quiet, shot some thru the 10-22 with a silencer, literally only heard the slap of the bolt cycle back...
Personally I wouldn't want to hit any living game with them, have seen a few doves and squirrels just fly, and run away after a direct body shot. and I know they had to have just died slowly later..... I think theyre way to inefective and NOT humane if you're trying to harvest game.. Step up to real .22LR's for that, keep the Colibri's for paper punching..
Ive heard the horror stories of jamming the barrel, never had it happen to me, but still look at the target, "fired three shots, see 3 holes" barrel must be clear.... worked for me for quite a few years now.. those are the rounds I used to get my daughter introduced to shootin' many years ago...
I like em because I can practice trigger pulls, different hold patterns, shooting techniques and breathing control. Without having to make the trek to the range... and see my results on paper, they're surprisingly accurate.
all things being said, I grab a few boxes every time I see them... and most places around me dont put a limit on them.... Ive got around 1000 rounds floating around here....