I'm having a 92 24 1/4" octagon rifle re-barrelled .The new pipe is 1-28" twist ,.428.6" groove and button rifled.Will I be able to shoot cast of of this ? How hard should the lead be and what size bullets would be recommended. Would like to drill a deer with it this fall or perhaps a spring bear here in Alberta Canada.The original barrel was sewer pipe quality with no rifling left so I didn't really wreck a collector piece.Will retain it to sell with the gun when I'm done with it.Not a rookie with guns but little experience with casting so bear with me on that one.