I haven't touched mine for over 20 years, so my memory is a little hazy (and I'm not going to tear my .22-250 apart to look, sorry,
), but if you stick with using the built in adjustments, and do it carefully, if you go too far, you can put it back where it was when you started. No harm, no foul.
My model 70 is a post 64, Varmint, made in the 70s, but it still has the classic trigger used in the earlier rifles. I know you can get a very good pull, with minimal (or none) creep and overtravel, with what is already on the rifle.
I just can't recall exactly how anymore!
Its basically a trial and error process, involving a lot of tiny adjustments and a lot of dryfiring, until you get where you want to be.
Get a snap cap, and go play. Just take it in small amounts, and remember that as long as you don't do any permanent mods (like stoning), you can go back to where you were before you started.
If you absolutely cannot find a setting you are good with, then its time to take it to a good 'smith.
Good luck, and have fun!