Chris,

That is a wonderful little rifle. Your rifle may be small in size and weight, but, as Chris F said, the 360 1/4" hits well above its weight.

I have a very nice Lancaster double rifle and was pleasantly surprised at how accurate it is.

There are a nimber of powders that you can use. IMR 4198 has been my go to powder. For black powder cartridges, I use between 40% and 45% of the black powder charge, looking for the most accurate load.

Best success at the range and in the field.