Redhead, Gary and TheDude are right,tensions must be balanced. Too much or too little and the floor plate may not close, accuracy can change, and if things are not lined up correctly, you can interfere with the trigger and bolt fuctions (won't cock, or can release firing pin w/o pressing trigger). In addition, some of the 77's need the magazine box put in from the top, others need to go in from the bottom. Put in wrong, it may not go together, or it may impact accuracy or prevent closing floor plate.
You can get a steel floor plate and trigger guard from Brownells (
http://www.brownells.com/.aspx/pid=8799/Product/RUGER_reg__77_STEEL_FLOORPLATE ). They take a little fitting, usually not just a screwon job. On the one's I've worked on, the finish on the inside of them sometimes needs a bit of work.
I have a love hate relationship with that angle screw.
Bfly
