I have an old chopped up 1903A3 rifle that has an old bausch and Lomb scope on it. It has the adjustments in the mount. When I bought it, it had the original stock on it except it had cut down. So I built a new stock for it and bedded it just like to old stock. The problem now is it wont shoot accurately with the new stock, it did with the old stock. I cant figure out why. The only thing I see different is the the tang in the back of the reciever is not bolted to a pillar like the original one. Could someone please tell me what on a stock could make it inaccurate?