Anyone ever have a problem with Remington 3" Slugger Magnum not firing?

I want ask first before I tell my story. I'm trying to rule out the gun (Rem 870 Magnum Special Purpose 12 guage 3&quot I think if you are a real deer hunter you may get teary eyed.

GOD BLESS
Charlie Patrick
Eastern Ontario Guided Adventures http://www3.sympatico.ca/chazpat/wildcanada.html