Mini Mags work well in self loading Pistols and are the same length as a standard .22 RF case. Sti(a)ngers are not my thing either, it's the case length that can cause chamber issues in some firearms. I have owners manuals that clearly specify no Sti(a)nger type ammo to be used in that particular FA. Also accuracy isn't the best with HV .22 LR I find. CCI Standard works as a good all around .22 LR for me, accuracy is not bad and subsonic too, another bonus.