I took two of my .45 Colt sixshooters to the range Saturday morning, with loads of 6.5 gr. Winchester 231 and 8.0 grs. Winchester 231 behind a 255 gr. cast SWC bullet. I fired groups, firing alternately so that fatigue would not favor either gun.
This from an indoor range. The rests at the firing line are not very steady, so bench resting is out. I hasten to point out I believe the difference is in the sights, as the Uberti has a nickel silver front sight, while the Ruger has that beautiful quick draw blade on a very good ramp.
These guns were as near identical as possible, 4 3/4" Uberti Flat Top Target and Ruger 4 5/8" Blackhawk, both .45 Colt.