My hunting buddy owns one and it shoots heavy conicals real well. I will concure on the 1:20 twist rate T/C seemed to be using that in their hunting carbines before the fire.

If I recall Paul loved the 430g Buffalo Bullet Co. bullet with 80g of RS. We could not find or were incouraged to use real bp back then I bet the FF with any heavy conical will shoot good in that rifle.

I bet powerbelts over 300g and .45cal sabots over 250g will work fine as well.