stock split horizontal to the bore, actually piece fell off. Was 60 grains Triple 7 & T/C maxihunter. I do not think epoxy will fix it.

Any ideas for a source for a new/used stock for a T/C Seneca 45 cal?

Have you tried Fox Ridge Outfitters, the T/C Custom shop??

The best source would be e-bay that is were I buy Seneca and cherokee stocks. Prices I have paid run about $125 - $150 that includes lock, tang and all brass furniture. I also buy barrels and reassemble the rifles back together again. If your stock is split at the wrist beginning at the lock plate screw it is repairable with a good epoxy. Most cracks occur when heavy maxi-ball loads are used.