The 777 pellets are engineered to duplicate the level of the Pyro pellets. So you probably won't see much more than a 1/2" change in your point of impact on target.

It's pretty easy to get either where I'm at, but since it's hunting season - I can see why supplies might be short in some areas. Personally I shoot loose powder anyway...............but if you want to talk about hard to get........try getting some true black powder - No ONE around me carries it. [:@]