I hate to bust anybody's bubble. But there may come a time when the 22 long rifle is the best guerrilla weapon available. You think not? When was the last time that you tryed to pack around 3000 rounds of any other ammunition In your backpack.
Take care, Willie
22lr was used by some deep recon type forces (SOG) in Nam. It was not the el cheap stuff, but 22LR none the less. A head shot at 25 yards was easy, effective, and simple to suppress. And as noted, it does not weigh much.
Don't as for a link to my info. Read this years ago in a real live book on the subject, way before Al Gore invented the interwebs.
