Just spent some range time this morning with my Uberti SS New Army. Not going to argue the accuracy of the flask/spout measurement. My flask has a 25 grain spout and I figure its close enough for my needs. Using FFFG Goex and a .454 ball with Wonder Wads, I was chewing out one big hole on the target at 15 yards.
I have always favored the 2nd Generation Colts and always adjusted my aim for the slight rise in the bullet. My Remington is spot on POA/POI like a modern cartridge revolver.
Happy Shooting :-)