The one place it falls short is for fighting.
Some older Latino "former rebel" transplants, here in the S. Florida area, would disagree...One can carry mucho ammo, with the good 30rd. mags, and a quick trigger, I guarantee it makes an effective suppressive fire weapon.
Targeting tires, radios, even coffee mugs, headlights, equip. whatever, in rapid succession, peppering those "leetle" rds, can keep many a foes head down. Without expending
There methodology was if your shot with a .22, it will take another guy to tend to you, or drag you out of the area, maybe two.
That's one or two less fighting folk to engage you. While saving the bigger ammo.
If your shot in the torso with one or two .22's albeit your survival chances are fair to midland, but your not shooting at me anymore, and need med care pretty quick.