Yes
UNLIMITED RIFLE.
Any rifle having a barrel 18 or more inches in length, measured from the face of the bolt to the muzzle, and having a safely operated firing mechanism. For minimum barrel length, the legal method of measurement from face of the bolt shall be employed. Neither the Unlimited Rifle nor the Unlimited Rest/s may contact anything that is affixed or clamped to the bench, effective as of January 1, 2006.
Other....
No Unlimited, Heavy Varmint, Light Varmint or Sporter Rifle shall be equipped with a muzzle brake; and no such rifle shall be capable of semi-automatic fire. All such rifles shall be loaded by hand, one cartridge at a time, and fired as a single shot. No magazine, clip or similar device shall be allowed.