Wonko;
Very good charts. "EVERYONE" notice in particular that last chart comparing Red Dot to PB....
....You can throw in all the extreme things you so desire to which are not relevant to the original question of 6k vs 8K....
In fairness to the original post, I added the numbers, only as a way to quantify possible pressure differences.
Doc has shared that piece before, and I think it's good, but it took your extrapolation to explain how it's even remotely related to stress on a gun. That's okay.
We all know that once we're travelling at a fixed velocity, we no longer feel the force it took to get there. Don't you think it would have been more relevant if the author could have measured acceleration, because both the shot weight and velocity are constants? Of course, we're going to get a constant velocity for the opposite reaction on the gun, aren't we?
The author explained that he arrived at the methods only because they were repeatable. Maybe, the graph in figure 4.4 is the most important of all. I would have preferred he didn't mix shells there, but it's all over the map and 'corrected'. Maybe, that points to inconsistencies in the shells and measuring capability, but if some shells attained their velocity in half the time, why were the shells that took twice the time to reach velocity 'corrected' back to the shorter time?
The thing I noticed about the Red Dot and PB chart is what we already know, it's documentation that different pressures can result in the same total opposite reaction on the gun for recoil purposes. But, it still leaves, good, bad or indifferent, one variable among constants, pressure.
