Gentlemen,
I suggest looking at the "Big Bore" BPCR Silhouette shoots. BPCR Silhouette shooting is a great team sport as well as extremely challenging for the shooter. Some up coming western matches include the Oregon Regional, Idaho State, Montana State, NRA Nationals, Montana Regionals: all have a minimum of 4 days of intense but very friendly competition.
Check-out the competition forums for details.