I've got a .62 caliber smoothbore and have deer hunted with it, but the deer never cooperated on days I was using that. I have close shots as well in the middle of the woods. Last year actually was a long shot for me at 52 yards. It was the first deer I took with my .54 caliber Lyman Flintlock Trade rifle. And that was a very exciting hunt for me.. even though it was the only deer I saw all season.

Best of luck with the rifle you select. There are some Mustang owners on the forum. I think Wabi has one and Semisane.