Free: Contests & Raffles.
First of all I wouldn't use power belts as there are far better performing projectiles out there for hunting. I personally would suggest Barnes bullets with a sabot if you want to stay with full bore hornady FPBs or federal has a new one out I forget the name of right now. And the only way to really know where your gun will shoot with any given load/distance combo is to shoot it and see. For my optima v2 with 350gr FPBs and 110 gr 777 sighted at 40 yards I'm 1/1/2 inch high. At 100 I'm 3 high and starts to drop about 150 down to about an inch low.
the reviews are not good on that muzzy. use the search engine here. all though i looked at one today at bi-mart in vancouver. its a new model vortek. it has a removable breech plug and nipple. they have changed some of the components on this one. i dont own a vortek,but it looks like they made some significant changes to it. it had a pad on the ramrod a palm saver. i read the manual. it says to use a oil in the area were the firing pin is. it says there is a o-ring in there to prevent blowback. ive looked at the older models. this may have been there answer to some of the issues they had in the past. the breech plug came out with turning it with my finger's.
i would put a musket cap on the nipple and make sure it ignites as soon as you can? try a rws musket cap. they are setup for musket most issues i heard was with caps not going off. if this is the new model with the breech plug they may have solved this.