Pictures!!! Pictures!!...Please man, show us some pictures of that Remington
I'll bet you would enjoy fireing it a few times...Use Real Black Powder (substitutes are hotter according to my chronograph and usually more corrosive than real BP), Use Round Balls,(.457's would probly work, but just measure the cylinder throughts to be sure the ball is bigger than the hole) and Don't cram it full of powder..22-25grains of 2ff or 3fff will be just fine.