wyz2285 wrote:But fire arms were very available already in the early 20th century...
Apparently the reason they went for the pneumatic mortars is that they were much more quiet than powder burners and also flashless, making them less easy to pinpoint for counter-battery fire.
These days there are much more compact solutions if stealth is required, the Fly-K mortar is a good example.
Well some FX airguns are only rifled in the end of the barrel, giving the pellet a initial space to accelerate, then in the end, give it the spin.
Interesting, not really a new idea though. You can get rifled chokes for shotguns, and the Paradox gun class have used limited rifling at the muzzle since the 19th century. I'm also interested in the type of rifling, from the video it seems to suggest that it's a Whitworth type as opposed to lands and grooves.
Good article here: http://www.scribd.com/doc/27463087/FX-S ... st-Article
you think you invented something and then you find out that the thing had been created years ago
That happened with the "rattlesnake" valve which I found out had been patented in 1928... ah well, nothing new under the sun