Here is the link to a good article, in fact it should be included with every new model 700....

http://www.snipercountry.com/Articles/RemingtonTriggers.asp


You can only get a certain amount of gain with the factory spring in the trigger, (if the rifle is old then the spring is probably good), but for the last SEVERAL (?) years the trigger springs have been so heavy that you just can't set them very light without encountering safety issues. Midway sells a pack of bulk spring material, Kit No. 69, part #025-069-000, they are 12" long, just cut a piece the same length as the factory spring, make sure the ends are bent in so they don't get into the threads and foul the screw. Use the smallest size spring in the kit, there are two pieces of each size, so one kit is a lifetime supply for you and all your friends, (you will have more friends than you think after they try your trigger)........
An RCBS trigger pull scale is a usefull tool in evaluating your progress, you should at least try your trigger set at 2 lbs, then if it is too light you can set it higher.
Whatever you do, don't by a fancy aftermarket trigger like a Rifle Basix, or Jewell............................you could get addicted.