You will not see many Mausers (if any) on the highpower range. With the exception of a newbie with no other rifle and just starting out, Mausers make poor highpower rifles.
First off, they are all in the match rifle class. Second, the availabilty of accessories such as sights, etc. are very limited to non existant. About the only time I have seen them shot is at some of those vintage military rifle shoots or one of the CMP "games." Mausers are also a PITA with a long action that is fairly flexible (comparatively speaking) when compared to most modern day bolt guns such as Remingtons, Winchesters and especially the high end bolt guns.
For a "fun" gun to shoot on occasion they are okay, but for serious *competitive* use, they are not advisable unless that is all you have or all you can afford at the time. Putting money into one to *try* and make it competitive is a waste, IMHO.