I have a custom shop 12 inch stainless barrel and I have to tell you, it's really a great shooter, it shoots good enough for me to invest in a better scope than I had on it and it now wears a silver 2x6 Bushnell trophy scope.
You need to buy a bunch of boxes of different ammos and see which ones shoot best, mine likes super x JHPs and that is good because they go for $7 or less at Wally world.
When I'm really pressed for time and don't have time to reload and want to go hunting or shooting with, the 22 mag barrel comes out. Mine will shoot sub 1 inch groups with the super x ammo and I'm not that good a shot.
regards,
graycg