More strength, added reliability, and honestly, if you think about it, you are more apt to make a better shot on game with a single shot since you know it will more than likely be the only shot you will have. I have a few of them and every one of them are pretty much tack driving machines. A well made single shot is, by nature of its design, going to be more accurate. No bolt to have to worry about. Basically just a barrel and action. Eliminate as many moving parts from the action and you get added reliability.