All the old Trojans I've owned worked like a Swiss watch; but at this point, even on the "newest" examples stock wood is now very old. If I were you the only precautions I'd take on a shooter grade Trojan would be lengthening the chambers to 2 3/4" (plenty of wall thickness on a Trojan 12-bore), and have the stock head reinforced and glassed. With those two things done, I'd shoot all the targets I wished and not worry about the stock, or gun any further.