THERE MAY BE a muzzle brake in your future. They've been around since before World War II, but their use on sporting rifles has always been limited to custom guns, and then in scant numbers. But that is starting to change. • Custom gunmakers, who are the trendsetters in rifle building, are now installing brakes in serious numbers. I asked one of them, who shall remain anonymous, why the shift occurred. "Guys are afraid to shoot nowadays," he said. "They're wimps. I put one on a .270 WSM or a .280 Remington and think, Mister, maybe you should be playing golf instead." • Kenny Jarrett installs muzzle brakes on probably 85 percent of his rifles. Ed Brown now puts a muzzle brake on all his guns save his dangerous-game rifles (and we will get to why in a minute), unless you state with great vehemence that you don't want one. Ninety-two percent of Mark Bansner's rifles get muzzle brakes. John Lazzeroni puts them on as a matter of course.