That sounds like fun - using handguns.

At rendezvous in North America, I've read that most 'duels' happened with rifles or smoothbores, shot or ball- whatever was handy and oft times ended up with skinning knives, walking on each others guts.

So - here in Northern BC, at rendezvous, we had a dueling event years ago- in the 80's. We had a truck rim with a 6' vertical pole concreted into it. On the pole was a rotating collar with 2 welded arms running out opposite each other. At the ends of each arms was welded an 8" steel disk. Running straight back from the collar top the rear was another steel arm with a loop at it's end. Attached to the loop was a standard tie-down rubber bungie cord. When one plate was hit, the arms would swing and the slower shooter would miss as his 'target' disappeared from his sight picture -seemingly instantly.

Shooters stand facing their opponent (disk), rifle at arms rest, butt stock under the arm as in forward carry - lock at 1/2 bent (1/2 cock). At the signal, raise and fire. Hitting his 'disk' swung your 'disk' out of of his line of sight - he lost. Draw straws for the duel. It will end up in a final duel and is a really good spectator's event as well- usually shot on the last day, Sunday afternoon as an in-camp shoot. 50 meters range.