Perhaps it shouldn’t be such a surprise, given cowboys’ reputation for straight talk. Still, when heading to Amarillo’s annual Cowboy Mounted Shooting World Championship, it is difficult to shed the suspicion that there must be a caveat of some sort. Surely, one thinks, if the event were anything close to the image that “cowboy mounted shooting” brings to mind, it would be either too unsafe to be legal or too watered down to be interesting (or possibly too gimmicky to be credible).It is therefore refreshing (and more than a bit thrilling) to realize that the event is exactly what it sounds like—cowboys and cowgirls firing guns at targets while racing around on horseback. The guns are real (although they fire blanks—more on that shortly), the…