Cayugad: Now that I am thinking about it, I don't recall if it is corn starch or corn meal-kind of makes a difference! I'll have to take another look at it.

Triple7: I'm not sure what effect the stuff had. I'm still working on sighting in, so the targetwas only 25 yards out. (I live in Arizona, the range temp was in the upper 90s. I only got about 10 shots off when my body started telling me its time to pack up and cool off somewhere.) As for cleaning, I used Cayugads Iso/Washer mix and the fouling didn't look to be noticeably less. Guess I will just have to do some more shooting and testing!

Trouthunter: I do have the type of rear sight you described. No offense, I think I'll keep it the way it is

~Robert