The .22" Long Rifle rim-fire cartridge can be problematic in a box magazine fed auto because it is NOT RIMLESS - and it has another problem in that it is greasy externally lubricated due to it being a heeled or stepped bullet.
THAT Will Fill Your DOUBLE-STACKED MAGS Right To The Brim
Ah but" I hear you say ".. that unsupported rim won't be pinched or crushed properly by the firing pin" -
Genius ain't it - maybe?
P.S, I don't know why makers offer .22" round-nose solid bullets for Match or target shooting - when according to Wikipedia .. " In target shooting, they(hollow-point) are used for greater accuracy due to the larger meplat. Hollow point bullets are more accurate and predictable compared to pointed bullets which, despite having a higher ballistic coefficient (BC), are more sensitive to bullet harmonic characteristics and wind deflection."\😂