There's a couple of definitions of a benchrest rifle. One is defined by rules of an organization and the other is the remainder of the rifles that don't meet those rules. Most rifles will meet the unlimited class rules but so very many would not be competitive. Given the expense of shooting a registered match and the travel involved I wouldn't take my lead stocked 22 short to a Benchrest match. If I call it a benchrest rifle since it can only be shot from a bench - that's OK.