I've tryed the Pyrodex pellets and they were nice. I have a .54 caliber so I couldn't compar them to Triple 7 pellets (they don't .54 cal pellets). I did switch to Triple 7 because is grouped better and was cleaner.
I do agree that electrical tape seems like it wouldn't work good in all situations but I haven't had it come off. I didn't mention it but I will put a wrap around the end of the barrel to hold it on.