10Guauge, to get the weight down to 2 3/4 pounds on the X Mark Pro Adjustable trigger, the barreled action can be taken out of the stock after checking that there is no ammunition in the chamber. At the front of the trigger there is an allen screw covered in (blue?) epoxy. If you take this barreled action to a competent gunsmith, he may take off this epoxy, to expose this allen screw. If the gunsmith decides it is safe to do so, he may turn this allen screw counter-clockwise slightly to reduce the trigger weight. The gunsmith (and not anybody else) should only adjust slightly, perhaps 1/4 of a turn then measure trigger pull and he should not try to get below 2 3/4 lbs for safety. To be safe only a gunsmith should do this, and he should check that the trigger and safety mechanism is safe after he does the adjustment, there is a reason why there is epoxy on this. The other screw on the trigger shoe can be turned in by the gunsmith to be flush with the trigger shoe, before the adjustment is done (this will make the trigger slightly heavier) so it's not interfering with your finger when you pull the trigger. I repeat the warning; only a competent gunsmith should do this adjustment for safety reasons.
Sounds a lot like the same screw on a Walker style trigger.
