Recently acquired a very nice+ condition Austrian M1851 carbine, see pictures, and now trying to find out the 'proper' bullet that was used in these interesting carbines.  Yes, can load a patched round ball, or a modern day slug with patching...but wanting to see the actual bullet they were used with?

A 2011 article in the North South Trader Civil War Magazine has a many page article on these carbines, but do not show the specific bullet that was used back then.

Roughly .71 - .72 caliber with 12 lands/grooves; 14" barrel.
10,000 of these were bought at the beginning of the Civil War, by the north.  An interesting carbine!  Nope, I've not fired it. 
Kinda of the opinion that: hundreds of dollars of assorted gun parts vs irreplaceable body parts!   
Most likely will see about finding it a good home in a collection somewhere, rather than using it?

Of all things found the pictured cast bullets on a table at a gun show, but they measure at .73 diameter. Obviously NOT for this carbine barrel - but think they'd be close to the design of what was used?

The original loading procedure: put powder in barrel; insert lead bullet and ram it down home to seat atop powder load (there is a ledge for the base of the bullet to rest on); then using the ram rod tamp hard the seated bullet, 2-3 times to get it to expand slightly to grip the rifling. Then mount up n' go chase 'em!!

Anyone able to share a picture of the proper bullet used?  Have read in another older Forum Post that possibly a bullet referred to as an Arkansas Hawg may have been used?  Anyone with a picture of the Arkansas Hawg bullet?
Thank you.