Why is an 80 grain unjacketed .410 slug with m.v. 1500fps viewed as adequate for defense when 110-gr jacketed .30 soft point with m.v. 2000fps viewed as marginal? .410 shot loads seem even less effective yet small-bore shotguns are often recommended to recoil-shy and .30 carbine (easier to use, larger magazine capacity) aren't.
Just curious...
Just curious...