The 7mm Rolling block was used just about everywhere, but it fair screams "Mexican Revolution" Also popular with Boers, French North Africa, Cuba, Phillipines, South America, etc. Not really useful for a US portrayal though. Love to have one. If the price is good I'd grab one!
Was me, I'd wear a big hat, serape, crossed cartridge belts, an SAA, and yell "Viva Villa" till Dell threw a hambone at me . . .