vinnynj- I used STUMPKILLERS liquid patch lube again this weekend. 50 cal shot 20 shots without wiping or cleaning, I did clean after the 20 shots, really did not need it. I was shooting 100yd off hand 80grns 3fg GOEX, the more I use this stuff the better I like it. Another shooter was using the New Le High Vally lube and was not nearly as good, about 10 shots and had to clean. The New Le High Valley lube smells like alcohol with a little pine-sol added, I use to use nothing but Le High Valley, they have changed something in the lube. He tried STUMPS liquid and had the same results I had, try it, even works well with SUB`s. Hope this helps..Respectfully Montanadan