You have no doubt of... what? Correctness of your purchase? Superiority of your rifle? Deadliness of your load? You ability to hit the target?

I've slowly learned that the ability to find the deer, then HIT the deer well, is the biggest factor in hunting success. A dirt-cheap sabot bullet and 80-90gr of Pyrodex is a 99% solution, if you do your part. I'm convinced of that... it's just fun to talk about gear, but they don't matter all that much, IMHO.