Hey TK, just a word to the wise, you'll get a lot of flack when you start talking about projectiles and RC tanks. I've seen some very good ideas that got jumped on pretty hard because they wanted to use actual bullets. It doesn't matter to me and I'm not trying to come down on you, I'm just trying to help you by preparing you for the reaction you'll get to that subject. I personally think that if you're qualified and safe about it you should be able to experiment with whatever you want, but that view is a definite minority around here. But, I'd really like to hear what you have in mind if you don't mind doing it in a PM. We need to keep sensitive materials out of public view so the bad guys don't get a hold of it. Loose lips sink ships, eh?