Titanic Steel

[Brent Francis]

I would have thought that what breaks your stock is the Force of the explosion which a function of mass time acceleration.
The velocity of the projectile is important but the time it takes to reach that velocity (acceleration) is More important. A slow burn that gets the shot to its max veloctiy near the muzzel will put much less force at the stock head than a fast burn that gets it there 6 inches in front of the shell. I am not sure but I think pressure may be more proportional to Force than inertia which is mass times velocity which I think you have been talking about.

[Brent Francis]

Just to clear up what I said: I think that pressure may be the important factor for both barrel and stock head (if i am right that it is proportional to Force. the ultimate muzzel velocity of the load is more important to the pheasant than the parker.