I recently bought my first smoothbore, a .36 cal Ethan Allen SxS caplock pistol (obviously not an original) which takes .350 balls. I bought a box of Hornady swaged balls but being the frugal guy that I am I saw that 000 buckshot is the same diameter. Hornady 000 is also swaged and while it is a bit harder and lighter due to the antimony content, I think it will work just fine [ Invalid Attachment ] . The lead balls measured .351" and weighed 65.1gr and the buck .3505" and 63.6gr. The attached photo shows the unscientific experiment where I wacked each ball with a brass hammer with about the same amount of force. Buck comes in a 5# box, so I saved $5/100 by buying that instead of the pure lead, plus, if my numbers are right, got about 35 extra balls to shoot.