Does anyone re-use the orange discs? If so how many shots can you get from one.

i have used them twice but the seal is ruined after the first shot and i got splatter in my face if i didn't have saftey glasses on i might have lost a eye. i would not use them more than one time.

Nope, not the orange ones or the red ones. Your ignition will change a tad and might get inconsistent firing due to them stretching after being fired. A 209 is very powerful in itself. I keep my old ones in case I was ever in a pinch.

No, I discard them.