We all started out shooting Cowboy guns under NCOWS rules. The Battle rifle program did not really start until 2007. At the 2004 Muster, they all encouraged Jack to shoot his Martini-Henry on one stage. He proceeded to knock every rifle target flat, to the great acclaim of all who watched. With this legend ringing in my ears, I later put together a Krag and Trapdoor demonstration for the 2006 muster in Iowa. After that, we put together a rules package and class structure for Milspec weapons, and this was first used in full at the 2007 Muster. Its grown steadily since then, with the 2008 Muster around 40/60 military/cowboy, and this year the Milspec rifles outnumbered the Cowboy guns 5 to 1! You picked a good time to show up!
We lost a lot of the Kansas Cowboy shooters when the Muster made the trip to Iowa, and have been rebuilding the numbers ever since.
Modified for memory correction!