Saw a video where this guy could not get some of his semi-auto pistols to cycle with Super X ammo. Could this be because some 22LR ammo uses slow powder designed primarily for non-auto rifles or pistols?

I don't recall seeing any boxes saying for rifle or for semi-auto pistol. Many don't say anything about powder or velocity. I have a Browning Buckmark and so far it has cycled with every LR I've tried, except for birdshot. Oh, I forgot, it will not cycle with the CCI low velocity rounds. I use those in my bolt action rifle for squirrels.

The only thing I've bought in recent memory is Remington high velocity in 525 round boxes and that's because that brand lists everything. I've got some old Winchester that says nothing.

Just curious.