After playing some more today with the Baikal MP310 over/under shotgun that I bought yesterday, I decided to tune the ejectors. Specifically, the ejector springs that are installed by the factory are much stronger than required. Here’s a good video describing how to remove the ejectors and clip the springs to reduce their strength.
Rather than a Dremel with a cutoff wheel, I just used dykes to clip 6 coils off each ejector spring, then deburred the ends with my benchtop belt sander.
Aside from clipping the springs to reduce the effort needed to close the gun, I also polished the bearing points on the ejectors and the slots in which they ride, and deburr all edges. I also polished the part of the barrel monobloc that bears on the pivot pin. Be careful when disassembling and handling the parts. I cut one of my fingers on a really sharp burr.
To smooth things up I used 600 grit wet/dry sandpaper, and gunsmith’s Arkansas stones from a set that I purchased last year from Brownell’s.
With these bearing surfaces polished up and the springs reduced, the action opens and closes much more easily.
I’m hoping to try a round of sporting clays next weekend with the Baikal.