That is a neat looking rifle. That one in 16 inch twist should make it shoot really well. That's the same twist rate that my Marlin .22 has. I almost wish you hadn't started this thread because now I have to show you these. All but the next to last one should be 3 shot groups.


Here is the same target with a different background so the groups show better.





Good luck with that rifle. I love shooting a .22. If you get a chance and want to shoot for groups at 50 yards, try some CCI sub sonic long rifle bullets. They don't make good hunting bullets because of the ballistics (drop) of a sub sonic round. But you may find the groups you can achieve with them can be amazing.
I should add that you might have some ejection problems with a sub-sonic round when shooting them out of an automatic rifle.