Lets shutdown the musket argument, the lies must end.
So the founders had no idea that an automatic weapon was possible? Something that could shoot faster than a single load musket?
Try again, they knew full well.
Lets take a look at a little history:
Automatics date back to the 1500s. One of the first form of Automatic weapons that founders would have seen and known of was seen in 1718, 1730, 1770; 18+ years before the 2nd amendment was written.
The Puckle Gun - 1718
In 1718, James Puckle of London, England, demonstrated his new invention, the "Puckle Gun," a tripod-mounted, single-barreled flintlock gun fitted with a multishot revolving cylinder. This weapon fired nine shots per minute at a time when the standard soldier's musket could be loaded and fired but three times per minute. Puckle demonstrated two versions of the basic design. One weapon, intended for use against Christian enemies, fired conventional round bullets, while the second variant, designed to be used against the Muslim Turks, fired square bullets, which were believed to cause more severe and painful wounds than spherical projectiles. The "Puckle Gun" failed to attract investors and never achieved mass production or sales to the British armed forces. One newspaper of the period observed following the business venture's failure that "those are only wounded who hold shares therein."
According to the Patent Office of the United Kingdom, "In the reign of Queen Anne, the law officers of the Crown established as a condition of patent that the inventor must in writing describe the invention and the manner in which it works." James Puckle's 1718 patent for a gun was one of the first to provide a description.
How about the pepper-box revolver in 1790?
http://en.wikipedia.org/wiki/Pepper-boxHow about the Nock gun in 1779?
http://en.wikipedia.org/wiki/Nock_gun1730 Dutch break open, breach loader, used metallic cartridges.
1670-1686 Cookson repeating flintlock.
Approx 1550, double barreled over n under wheel lock. German.
1770, Mairet aux Ponci flintlock pepperbox.
1500s Spanish sword with double barreled pistol hidden within.
High power repeating air rifles also date way back.
These all had the ability to fire rapidly.
They knew full well that technology advances and that humans will always find a new, more devastating ways to kill each other. This is why they stated the 2nd amendment the in such a way: "keep and bear arms", since that is all encompassing phrase for any and all kinds of weaponry, non-restrictive.
http://en.wikipedia.org/wiki/Puckle_gunhttp://patriciahysell.wordpress.com/2011/05/15/puckle-gun/http://guns411.com/cool-guns-411-the-puckle-gun-1718/