Out to about 80 yds., my FA Mdl. 252 Varmint Special, with a 4X Leupold scope, before I returned the gun to the factory after about 8 years to have the Match chambers opened up. The Match chambers were just too much of a nuisance in the hunting fields. Opening up the chambers probably sacrificed a bit of pure mechanical accuracy, but you really can't tell a difference in the field.
For centerfires, and at distances of 100 yards or more, my all time champion is a 9" FA Mdl. 353 with a 4X Leupold. With a Hornady 180 XTP and 15 gr. of 296 with CCI Mag. primers, it's a true 1 MOA revolver, and has shown it numerous times. Now I'm not always (or even often, anymore) a 1 MOA shooter, Lord knows, but that's beside the point.