Was just messing around with my wolf this weekend. Put open sights on it and was getting ready to hit the range but I have a big problem. The hammer cocks all the way back, but when trigger is pulled it stops just short of the firing pin even when the break action is closed. Am I missing something obvious, or should I call CVA for help?

I got my package of Thor .501 300 grain bullets. I tried running them down the barrel. They'll go, but take some pushing. I assume that is ok and the barrel isn't going to burst, but since this is my first muzzleloader, I thought I'd confirm with you guys who have been using them.