You know when 777 came out it used to foul the No.11 nipples so bad, I would get hang fires. Since then I refused to use it with No. 11's. But got 209's, and never had the problem again. Alot of folks had fouling issues in the beginning. I wonder if its was just the first batch.

I would toss those presoaked patches. If you got a hang fire on first shot, after you cleaned, you got oil or some other issue. 209 primer is too powerful already. Another thing, 777 pellets soak up moisture like a sponge. And I ahve seen some guys at the range have problems. I stored my pellets in the box it came in but in a vaccum type bag.

I bet the pellets are your issue. Make sure you keep them out of moisture at the range.