Well, I took the advice of some fellow forum members in regards to
my 760 GameMaster .35 Rem. Instead of trying to disassemble the
gun to work on the bolt I simply sprayed a little CRC Powder Blaster
into the firing pin hole and around the back of the firing pin plunger.
Well, I let it set for awhile and then got the firing pin to move some.
I kept at it a little bit at a time with the solvent and working the pin
back and forth slowly. It finally freed up and some dirty crud came out
around the back of the pin plunger. I think this gun was just set aside
and not used for a long time and the firing pin just froze up from
old grease or oil that had hardened and was never removed. I will try to
shoot it again and see if it works better this time. Also, I still have
the shells that misfired. The primers are dented. Would it be OK to
try and fire them again instead of discarding them??

Sure, why not? If they dont fire, wait a secound or two before you clear the gun. Dont plan on useing the dented primer shells for anything serious though.

Thanks for the advice! Just wanted to be sure it was safe to use
those shells again. I had a feeling the gun was to blame for the
problem and not the ammo. I will take it out again and make sure!

Please remember to oil everything you sprayed with the Powder Blaster because it removed every trace of oil from the metal, and it will certainly rust quickly.

Thanks for the reminder,sir! I took care of that as soon as I was
finished cleaning and degreasing. The firing pin seems to work
like it should now and is not frozen from crud in it. Moves very
smoothly like it's supposed to.