If it's smoothbore, then it's not a rifle, by definition. Can you tell me a little bit more about it? I've not come across a smooth-bored Hawken-style firearm before.
tac
I have a smoothbore kentcky style shotgun made by armisport, it can be quite accurate for a smoothbore if I do my bit.
I have a .60 smooth-bore Hawken,
shoots well out to 50m and is a great piece of fun,
but if you want to shoot comp or distance,
its back to the .45 or.50 rifled,
T,