Got my new Shadow2 optic ready two days ago. Of course I had to take it apart right away before I shot it. D/A trigger pull was about 12 pounds, S/A was about 4.5 pounds on my scale. The internals looked great so I decided to do nothing to it. I did my bend tweak to the factory trigger return spring, rummaged thru a box of springs left over from the thrilling days of yesteryear and found one hammer spring labelled 15# minus 5 coils and installed that. Also found a recoil spring labelled 10#, probably a Wolff. I oiled all the parts as I put it together. Got a 5.5# da pull and 2.5# sa pull. Nice and crisp, i can make the trigger creep a wee bit if I try real hard but at match or practice speed no noticeable creep at all. Reset is quite nice. Installed the Vortex Venom and went to the range today. Only brought 50 rounds. They all went bang, no misfires, primer hits look fine with Federal primers. Sighted in the Venom at 10 yards, then moved to 15 yards Did a three shot one hole group at 15. Supported of course. No, I didnt miss. Got a one inch group at 20 yds. Shadow2 is a helluva gun. Who the hell needs a Shadow Target or a Bull Shadow? My load was 3.4 grains of V V320, Federal primers, 147 grain Campro plated bullet @1.110. Empties landed about 6 feet away. The gun flips up, dips down, then resettles at about the starting point. Just loaded another 300 rounds and will be off to the range tomorrow. I will try and tune the recoil spring.Cheers.