Just curious - thought occurred to me what if someone accidently put Pyrodex pellets in their gun with the black igniter end pointing away from the breech. Would they still ignite? ignite slower? not burn as completely? or ? Anybody heard of this happening?
(No - I didn't do this myself.)

Yes...in fact that's how they were originally made...the ignitor ring was an enhancement which came later

I have heard of guys shooting them when they where reversed they pushed the sabot out slow and a few the sabotwent just a few yard from the end of the barrel.BUTUse T-7 pellets and you dont have to worry about reversing them.