Be careful when you install the Timney, as you will need to mill some room in the stock and trigger guard. The stock work can be done with a dremel tool, but the trigger guard is best done with a mill or a drill-press with a good vise. The trigger guards are (mostly) made of aluminum alloy and are easy to crack if you're not careful. I know this because I've broken a few of them. The last time that I checked, Ruger didn't carry the trigger guards, but Jack Frost in Rapid City, SD, has them.
If given a choice, I prefer the Timney triggers in the tang safety Ruger 77s that I'm going to shoot much. I probably wouldn't install 1 in a collectable Ruger 77, because of the mill work necessary to fit the new trigger.
Jeff
