Neither had a problem with fouling. I use brass washed 22 mostly. I have shot some lead bullet to see how it shot and it was fine.
I do not have a scope on my AR.
It is very accurate at 25 yards. I would say the same as any other iron sites .22 I have.
At 100 yards, I keep 90% in a standard silloutte in moderate winds.
I say this about the 100 yards as I have not precision shoot at 100 yet. Due to the fact that I go to a fairly windy place (North of Dallas) I have not been able to do true precision shooting.
I also shoot this for pure pull the trigger fun. Rapid fire (25 rounds in 15 seconds) is how I mostly shoot. At 25 yards, all of the shots stay inside a paper plate. Easy to control, easy to shoot.
I will say this, using .22s that the brass has tarnished does cause FTEs. This weekend I was shotting my old stuff and it was a problem. When shooting new boxes I have a failure about 1 out of 100 rounds.
Spend the $5 to $10 on the AR brass cather, otherwise you have 22 brass everywhere.
texasag