I live in Alaska and the gun shop that sold black powder shut down. I also saw that Goex closed up and might be taken over by Hodgen. I have a few pounds of black powder left but I'm afraid to use it up but want to do some shooting. What do you guys recomend I try as far as a substitute powder until I can get more black powder. My rifle is a Lyman Great Plains Rifle in .54 and I shoot PRB. I haven't tried anything else before. Also, will I need to clean differently? Different lube? Load? As you see, I have lots of questions and I am hoping whatever you guys recomend, it will be available up here. Thank you.