If you're in pistol range for them, they're in easy range for your .22 carbine. You really and truly don't want to kill anyone here, but you want to change their priorities. This is where shot placement becomes king. Within 75 yards, it's a simple matter to pick a joint; any joint: ankle, knee, wrist or elbow. Ankle or knee will ensure that he can't chase you. Wrist or elbow will keep him from shooting back. Any of those hits will divert his friends' attention from messing with you to taking care of him. They don't know what he was hit with, or how bad, but he's bleeding all over the place, and screaming his brains out. While they're sorting thru these things, I'm bugging back to the car, and putting my recreational gear away. Then I'm breaking out the 870, with 3" mags in 00 Buck or slugs. Then I'm taking the road less traveled, back to the freeway.
Thanks for the nonsense.
First, if you have reason enough to use a gun (deadly force), then you have reason enough to kill. Period.
The only justifiable reason for using deadly force is to end the threat of death or serious bodily injury to you or another person. The only way to do this is to shoot to stop the threat, and to do that you must shoot to kill. Using deadly force to disable someone's elbow, or using deadly force to "change their priorities" is not a justifiable reason for using deadly force.
Then, you HOPE his buddies care enough about him to help him rather than retaliate agaist you. More nonsense. Maybe they will, maybe they won't, but the threat hasn't ended if you have to run away. Remember, you shoot to end the threat?
Even so, and ignoring the nonsensical scenario, a .22 LR can be used for SD if that's what you have. I STILL think there are better options, but if that's what you have, then it'll help you stay alive.
A gun is a tool like any other. Some are better for certain jobs than others. You can take a screw out with a knife tip, but a screwdriver works better.
Again, I'd still carry something bigger than a .22.
A handgun in a holster is always with you, and can be grabbed quickly if needed. Rifles tend to get set down, or leaned against a tree, and might not be with you when you need both hands for something else.
In the outdoors, I usually carry a revolver powerful enough to handle whatever I might face. Around here that might be a mt lion, or more likely a drug runner or human smuggler from Mexico. I wouldn't want to shoot at a guy armed with a full-auto AK using a 10/22, but if that's what I had...
For a carbine in the hills or desert, I usually carry at least a .22 mag, and more likely a 16" barreled lever gun in .45 Colt. Still not a great choice if I happened to get on a drug runner's bad side, but at least if I had to use it and hit the guy with a 300 grain bullet from a .45 Colt at 1650 fps (rifle), he'd know he'd been hit.
I'm not sure a .22 LR in the elbow would do the trick.