I don't have direct experience with the Mark II, but I did go down a rabbit hole on .22 pistols years ago that had me asking the same question. I have a Hammerli Trailside (distributed by Sig) from a while back. After some adjustment, I managed to get it to fire subsonic rounds with no issues. I have a friend who has a Ruger Mark III or IV. I know he struggles with it on light loads. I grew up shooting two different Colt Woodsmen pistols. While they were a delight to shoot, neither were immune to failures, regardless of the load. From what I've learned, guys have improved the performance on the Ruger's by polishing the contact parts on the slide and even switching out to aftermarket springs. Again, I can't speak from personal experience, but I know people are making it work.I was wondering if anyone has used the mark 11 in semi auto state using 22lr quiet...
at 710 FPS , the recycle ability could possibly be compromised...
has anyone attempted this...thanks