Hey Dale,
I'v built 2 on a stevens action. One with a Mcgowan Barrel in 6mm br. Used a rifle basix trigger on this one and it will shoot well under .5 once and a while. It's my brides long range pdog rig and she will kill at 600 + regularly. The other is a shielan in 22-250 A.I., this one has a SSS trigger in it and is a fine rig too. This my go to gun for shooting eggs at 300 yards and works the pdogs well too. I can get under .5" at least once every time we shoot paper. Its got to the point I prefer a stainless receiver and have made friends with the target accu trigger. I now just pony up for the model 12 ss action from Jim at northland. Good luck, Bill