The link is wrong. The Ferguson was much slower to load particularly as the rifle became 'experienced.' It was one of the first types that offered breach loading, was a terrible breach loading design, and it would not have been very successful in actual usage. It is a fact that the only Ferguson rifles actual made were known to foul quickly, which would make them useless after five or six shots. Ferguson rifles made today might be a bit different, but I would put a Hawken Rifle up against one any day. Not quite contemporaries, but there is a reason that fifty years later they were still muzzle-loading.