I've been working with my Uberti 38-55 for about a month now. I made a cerrosafe cast of the chamber and bore and found it quite oversize. The bore is .376 and groove diameter is .383. I could not locate any proper size bullets so I ordered a set of swaging dies fron Corbin and have been shooting paper patched. My rifle has a straight stock with double set trigger. I installed a Marble's tang sight and have a globe front sight ordered. Of the two loads that I've tried ( 3031 and 4759) 4759 at 16.5 grains is shooting very well. My next step is to increase the weight if the bullet. Although the oversize bore has been an obsticle I am please with the rifle. workmanship, while lacking in several places, is quite good overall.
Bill