Unless you have the correct .600 dia bullet - available in two styles - you'll just be burning powder and sending lead downrange. Please take a look at Rob on britishmuzzleloader on Youtube, and get in touch with Martyn of X-Ring Services in Spokane Washington state. He makes the moulds for the correct style, weight and diameter bullets for the Snider. Rob has two articles on loading for the snider, and LOTS of shooting with them, too. There is also the annual event called the Great Alberta Shoot, with many Sniders, and Martyn putting in appearances, too.

I have two heritage Canadian Sniders, both of which shoot very well, actually DID shoot very well - here in UK they would have to be on my FAC so that I could shoot them, and I'm told that I can't have any more guns...