I have an older stainless ruger m77 mark II rifle with a terrible trigger. The rifle actually shoots very nice groups so I would like to put a better trigger in it. It’s very hard to determine which trigger I need. I found one from Timney triggers but it likes like you have to do some grinding according to some YouTube videos which I’m not exactly sure how to go about doing? Is this the only option I have? If so, what do I use to grind the new timney trigger? Any help would greatly be appreciated. I’m looking for a trigger which ends up in the 2-3lb pull range.