Re: Factory Stocks
A stock is a convenient device to hold on to the action and barrel. It must be rigid, stable, and fit the shooter and application. Other then that material or shape is up to the end user.
The injection molded stocks have pretty flimsy forends but as long as it can not hit the barrel during recoil, it doesn't matter. When resting on a bag, there is very little force applied to the stock so it is actually pretty rigid.
Bed the action, lug, and under the first 1 to 2" of barrel. Make sure that the action is not strained when the action screws are tightened. There must be no movement at all.
It will work as well as another stock with the same profile but made from a different material. There is enough rigidity through the action area, wrist, and buttstock to work.
When shooting, place the front bag within 4" of the front of the receiver. This is the most rigid area of the forend, widest and usually the flattest too. Also make sure that each shot is made with the rifle in the same bag placement.