With no mark on the primer, I'll bet the firing pin is stuck/frozen/rusted in place. Remove the firing pin bushing assembly from the frame. Soak the assembly in penetrating oil and carefully work the pin to free it. Once free, lubricate the pin, bushing and spring and reassemble.
If this does not work, call T/C at 603.330.5659 and they can provide replacement parts.
I have done this to free a stuck firing pin after many rounds of black powder and a less than stellar cleaning/lube job.
A forum community dedicated to the great outdoors and hunting enthusiasts. Come join the discussion about hunting, fishing, survival, archery gunsmithing, optics, reviews, accessories, classifieds, and more!