Mmmmm. some food for thought there. I still have a few issues with it though. 
First I want to clear up the rifling business. You say we consider rifling a major advancement in accuracy, but then in the very next sentence, you say modern artillery does not use rifling. Then you flip back to saying it increases angular momentum? So is rifling good for keeping things straight, and if so, why don't they use it in modern artillery? Surely that would be a step back? Whilst we are on the subject of artillery ....
http://adsabs.harvard.edu/abs/1981STIN...8214395P
Seems steel is as popular as ever. Google 'Bethlehem Steel Corporation' and the word 'artillery'. Been using steel a long time.
Steel for shells, steel for the casings, steel for the shrapnel inside and hardened steel for the pointy bit at the front, to pierce armour.
http://en.wikipedia.org/wiki/M829_(munition)#M829A3Deplete Uranium, Aluminum, and Carbon Fiber. Probably steel in there as well.
I would point out it is fin stabilized and not rifled.
Why do you not do some research in the matter of rifling and why it came and why now other systems of stabilization are used.
Weapon wise, all sorts of materials are used in the production of shells, warheads, etc.
And again
Whoah there! You can't just say the trade winds are caused by Coriolis.
http://www.weatherquestions.com/What_causes_wind.htm
No mention of Coriolis to generate wind there. Wind is quite capable of existing without Coriolis.
First statement on that page
Wind is caused by air pressure flowing from high pressure to low pressure. Its direction is influenced by the Earth's rotation.
And again
THE WIND AFFECTS THE EARTH'S ROTATION During the northern hemisphere winter, the stronger westerly winds that build up in the Northern Hemisphere, combined with frictional drag at the Earth's surface, actually produce a very small, but measurable, increase in the speed of rotation of the Earth.
And from our famous resource - Wikipedia -
ALL HAIL WIKIPEDIA[urlhttp://en.wikipedia.org/wiki/Coriolis_effect#Flow_around_a_low-pressure_area][/url]
High pressure systems rotate in a direction such that the Coriolis force will be directed radially inwards, and nearly balanced by the outwardly radial pressure gradient. This direction is clockwise in the northern hemisphere and counter-clockwise in the southern hemisphere. Low pressure systems rotate in the opposite direction, so that the Coriolis force is directed radially outward and nearly balances an inwardly radial pressure gradient. In each case a slight imbalance between the Coriolis force and the pressure gradient accounts for the radially inward acceleration of the system's circular motion.
Conclusion
Well for rifling and use of steel in shells I have no clue why you came out with that.
As for the weather part - I also have no cluse why you came out with that.
Berny