If I'm not mistaken the TH is a model 11. That would be the same as the 10, 12, 14 and 16 models with regards to the action screw lengths. Two digits denoting the short action models. If you ordered a stock for a 110, 111, 112, 114 or 116 then you ordered a long action stock. The Boyd's web sight offers a good pictorial to assist you in making the correct measurements in order to purchase the correct stock. The action screw length does not include any dimension using the rear trigger guard screw. Hope this helps.