Why not take the gun to a gunsmith? You can get them to do a trigger job on your rifle and get exactly what you want and it doens't cost an arm and a leg. Plus you know that your gun will be safe when all is said and done.
I have owned quite a few Model 70's and each and every one was adjusted by my gunsmith with one exception. I bought one of the original ss model 70 and sent it to a nationally known famous gunsmith to get the trigger done. I got back my rifle in 2 weeks and it had a unsafe trigger set to 3 lbs no less. Drop the rifle on its buttstock and off it went. The gunsmith I use now stones, grinds and adjusts the trigger perfectly on my Model 70's. I sugget you take it to a gunsmith