hrdeerslayer - if you mean you load it and hunt with it all day then bring it home without being fired, and the next day it will not fire. I will guess there is a temperature change somewhere and condensation is taking place. If you are saying you can prep the rifle, load it, set it in a corner and the next dayit will not fire, then I would guess that your prep routine is wrong.

Under what circumstances or what took place, prior to the rifle not shooting?