Might want to look here for more info...
www.rimfirecentral.com/forums/index.php?Very good site for anything .22.
They address alot of ammo/gun issues in depth.
I have been learning alot there.
I have two Ruger Mk IIs, a Browning Challenger III (Father to all the Buckmarks) and a NAA Mini Revolver.
Both Rugers were purchased new and the Browning and Mini are used.
The first Mk II one is a blued Goverment Target with a 6 7/8" barrel.
I replaced most of the trigger compnents with Volquartsen parts and Wolf springs.
I also replaced the front site with the sight off a Ruger Single Six.
I didn't like the sharp edges on the stock one, it was chewing up my holster when I would draw it.
It is now very crisp and clean and accurate.
A real joy to shoot.
The second MkII is a stainless Slabside Target with a 6 7/8" barrel.
This one is still bone stock.
I think if I get a chance, I'm going to do the same treatment as I did above.
I just picked up the Browning a short time ago.
I was looking for another Ruger for the Mrs. and ran into this used at a show.
I really like it, the trigger is much better than the stock Ruger.
I see alot of featured that are reminiscent of my old Colt Woodsman Match Target I traded away many years ago.
Wished I had never traded that one.
I am looking forward to seeing how this one will shoot.