Originally Posted by pluckit

So what is the difference between shooting a conical made from wheel weights and shooting a copper plated conial, or platinum for that matter, like Powerbelts? Obviously none of them are pure lead. A round ball shouldn't matter since it doesn't touch the bore anyway. Could it have anything to do with the expansion of the lead as it's being pushed down the bore by the hot gas from the powder? Apparently that expansion is needed from Powerbelts for the bullet to contact the rifling properly.