I've never missed.
As a matter of fact, no good hunters on the internet ever miss.
If you miss, it's because you are a horrible person and should be barred from hunting - and the internet - for life. I learned that on hunting web sites.
LEGAL DISCLAIMER: Yeah, I've missed, too. As a matter of fact, I've invented several unique ways to not get elk with my muzzleloader. It sure is fun when you get it right, though. Keep at it, and good luck. Post a pic when you drop one.