As far as the Blackdogs go I am glad that you guys seem to have gotten good ones. I bought the first one and it didn't work so the company tested another one and sent it to me. It wouldn't work either.
Now when I say it wouldn't work, I mean I couldn't get it to cycle through and entire mag without jamming up. And I have 20 10/22's to choose from. I tried it in 6 or 7 and gave up.
I know only use the Ruger BX-25's and have never had an issue.