Using the Shotgun Boogie Trigger Spring for your Uberti 1873 will reduce the trigger pull.
Boogie Hints: Boogie recommends using a Dremel drill with a diamond bit to grind a small slot at the tab of the sear, (to prevent the spring sliding right or left side off the sear).
Sometimes a shooter want or need more feedback on the trigger. In that case the 2 lb trigger helps a lot.
The kit is coming now with two springs. One about 1 lb trigger pull, the other about 2 lb trigger pull. Easiest way to find out, which trigger pull works best.
*While this part is easily installed, it is not drop-in ready and requires fitting by a competent Gunsmith.