I’m not a black powder guy myself but my friend got me to sign up for the muzzleloader tag for elk. Last year, 100% draw success for this unit. We had four people sign up and I was the only one who drew. Fortunately, my friend went for a mule deer tag and got one or I would have been Jeremiah Johnson.
Well, I bet you can find a muzzle loader. Unfortunately they are pretty expansive. But they are generally pretty accurate.