I have a 77 MKII in 300 winny that I would like to fix the trigger on. A friend showed me some good literature that he found that he followed and fixed the trigger on his .06 in the same model. Anyone else have any experience with this particular model?

I know all the cautionary stuff, don't do it yourself, etc, so I'm looking for help not a lecture

I've done a number of Model 77 Mk II triggers. You can fix the factory trigger by changing out the spring, plus polishing mating parts for a nice 2 1/2 pound pull. Of the aftermarket triggers, I like the Rifle Basix best as it is easier to install. With the Timney and Spec Tech triggers, you must hand file the safety/trigger interface to get the safety to work properly. That requires some time and patience to get it right. The Rifle Basix trigger handles that safety issue in a different, more user friendly way.

Don

I'm thinking to start with refining the factory trigger. Hope that works, trying to keep cost to a minimum as this is my work horse hunting rifle, nothing fancy.

K, just be careful to not over refine it. Ruger triggers and stuff are made from sintered (powdered) metal, and are surface hardened only.. which you cut through the "polish" which is the hardness, things go pear shaped quickly

I think I ve put in 5 spec tech triggers in ruger MKIIs now the frist one took about 40 min the rest about 20 had to do very little fitting and they all worked great.

quote:

Originally posted by jeffeosso:
K, just be careful to not over refine it. Ruger triggers and stuff are made from sintered (powdered) metal, and are surface hardened only.. which you cut through the "polish" which is the hardness, things go pear shaped quickly

Good point about not sanding through the surface hardened parts. I just knock off some of the surface roughness with 400 paper, then hit it again with 800, and lube the surfaces with Molly paste. You don't want to over do the polishing as Jeff says.
The spring change is the more important part of getting a decent pull. I keep a box of springs that I select from and cut the spring to the same length as the factory spring. Don't cut coils off of the factory spring as that is a no no.

Don