I can't remember what a 700 looks like as far as firing pin indicator, if you have another, cycle that and see what compares, fired and cocked. If it looks fired, pour some bolt blaster down the tube, while letting her soak, get a nice BRASS rod stock in bore diameter (minus a bit) that is long enough to give a nice love tap. In fact, soak the daylights out of the works with the best solvent sauce you have and give it time to work.
If anything, tapping on the rod should tell you if the pin is protruding from the bolt face.