Originally Posted by Styrak
You're forgetting the first thing here.
Do 4.5mm plastic BB's exist?
That's the first thought that came to mind as I read the initial post. I don't think these things would exist.
Even if they did, I wouldn't want to be on the receiving end of one. If the gun shoots 300 with steel BBs, then plastic BBs would be a lot lighter then steel and will travel at much higher velocites.
And even if you could keep the gun at al acceptable velocity with plastic BBs, I would assume that the 4.5mm BBs would have much better flesh penetration power, because the same amount of enerygy will be delivered to the targer in a much smaller area...
I'd have to conclude the same as T7. I don't think it would be allowed, but it's really up to the organizer of them game.