Ive got a cva optima pro .50 cal. I just took it out of the box today and have never shot a muzzleloader. The instructions said put breach plug grease or some type of oil (i forgot exactly what it was called) on the breach before firing. Do i need to go somewhere and buy this grease or is gun oil ok? Also i would appreciate some advice on what to shoot. I bought Powerbelt bullets .245 grains and pyrodex pellets. 100 grains of pyrodex should be enough shouldnt it? If anyone has shot a load like this how far can expect to be able to accurately shoot, just to get an idea before i go to the range?