I just noticed RLI was in Aussie land,and I will edit my post to the attention of US citizens, only! My post does not apply to him, or anyone outside the USA! However, for those who are in the USA, do not think because this can be done legally in Australia, it will not be frowned on here! The mere suggesting doing it here may get you a visit! The Patriot act leaves some real holes in your rights today! My advice to the US citizens is, tread lightly! The key words like Patriot act,ATF, Sawed off, short barrel, in this, and my other post may throw up a flag on big brother's computer chatter watchers, looking for terrorest action.

In OZ, if it is legal, the Pedersoli would work fine, by simply lopping off the barrels just in front of the fore end, and re-doing the tangs to a better pistol grip angle! The 45-70 would be a perfect round for this, if the barrels are left at around 12" to 14", and a fast powder like IMR3031, or one of the Aussie powders with the same generel burning rate, is used . The cartridges used in howdah pistols were large diameter, and had very short cases. The cartridge mentioned by Marrakai is perfect, the 577 Snider carbine,(SHORT), or the 58 Berdan Carbine, were both chambered in original H Ps. Both are British, in that they were designed by Americans, but were not accepted for military rounds in the USA, but both picked up by the Britts. The standard NE rounds for Double rifles are much too long to do well in a pistol. The barrels are not long enough to burn the amount of powder used in those long cases.