As one who took the "how to adjust your trigger of your Rem 700" off a web site and tried it, I can only say for me the directions didn't quite work but they explained enough so even I finally got the trigger I wanted, don't know if it was me or the directions, probably me. Having some knowledge of how the trigger works is a must I think, you don't have to be a gunsmith, just basics.
The directions I think stated to slam the bolt closed about a dozed (several?) times to make sure it wouldn't fire, I would add to bounce the gun stock down a couple of times on a rug as a additional test. Good luck.