A bore is only the diameter of the bullet, right? Not the thump of what it is capable of. At 50 yards, though, I would rather be shot by a .380 pistol than a 30-06 rifle. I mean, don't confuse bore with the 1/2" diameter brass shell full of explosives that push that .3" piece of lead & copper down the range. (And, for the record, I don't want to be shot by a BB gun let alone a real bullet!) Merry Christmas.