how to best slug a revolver barrel?

[M. De Land]

For quite a while now I've been suspecting that the best cure for Pietta's 1858's isn't reaming the chambers but rather replacing the barrel with rifling of the right diameter, geometry and twist. For the price of a barrel blank made to order and a group buy on a smith reworking half a dozen revolvers...
Half a dozen pistoleros might get to have the revolvers of their dreams.

You lap a Pietta barrel correctly and fit the chamber mouths and forcing cone to the grooves and it will shoot with the best of custom barrels in my opinion. My worked over 58 will beat the snot out of my ROA which has had only a trigger job and no other alterations.
Most revolvers tend to be tight of bore where they thread through the frame and open up at the muzzle. When all constrictions are removed from the bore , chambers reamed to groovediameter, forcing cone evened and muzzle squared the guns will usually shoot to their best potential and that is almost always more accurate than it's owner is capable of holding for.