A friend of mine has a Timney on a MN 91/30 and it works well. I was interested in it primarily because it includes an easy-to-use safely. However, I had a difficult time justifying spending more on a replacement trigger than I spent on the rest of the rifle.
Instead, I polished the trigger parts as per the directions on any number of internet sites, and made a pull ring for the cocking knob from part of a snap swivel for a dog leash. I also cut a couple of turns off of the firing pin spring to make it easier to pull and turn the cocking knob.
The result is a smooth trigger and functional safety on a rifle that will reliably shoot 3 rounds into a 1.75 group at 100 yards with a 2.5x scout scope using handloads of Hornady 174 fr RN bullets and a starter load of H4350 that chronographs to 2500 fps from the 20" barrel of an M44. I had it in a tree stand last weekend and had no problems operating the safety in a hunting setting.