Ryan really doesn't run the pro-shop. Dougie is the one to talk to about that. I really don't think he'll have an issue with it. Maybe throw in that you could mention in the vid that TRP is loaning you the barrels, and possibly include their proshop website (
www.3rpaintball.com). I can't really see them having too much of an issue with getting some free advertising in exchange for putting a couple hundred rounds through a few barrels.
EDIT: Looks like they killed their online sales... oh well.