I was hoping that some of the more experienced members might be able to help me figure out what's going on with a 9.5" Super Redhawk 44 Mag that I purchased new in 1990. After warming up, after say maybe 30-40 rounds, the trigger pull becomes extremely light when shooting in single fire mode (with the hammer pre-cocked). It's unpredictable and a little dangerous to say the least. I also own a 7.5" Super Redhawk that I purchased a few years earlier and the trigger pull remains constant no matter what I do to it so I know the problem is with the gun and not me. The hair trigger issue has been present since the revolver was new so I sent it back to Ruger soon after I bought it, but they returned it without the problem being fixed (maybe they didn't shoot it enough to replicate the problem I dunno). I don't often shoot the 9.5" Super Redhawk, favoring the 7.5" for most of my 44 Mag needs, but I motivated to get the hair trigger thing fixed now before I forget about completely. Any ideas what might be causing this and how to fix it? Ruger replaced the mainspring to placate me 17 years ago, but it didn't fix the problem. Thanks in advance.