TIm, here is actual text of the rule in the body of the rulebook that is meant to accompany the diagram. As I read it, those are the maximum dimensions, 'shall not be greater than X'.
2.3. Heavy Varmint Rifle: A Heavy Varmint Rifle is any rifle having a safe manually operated firing
mechanism that weighs no more than thirteen and one half pounds, inclusive of sights. Any sight
will be permitted. The stock should have a flat or convex forearm not more than 3 inches wide and
having a toe formed by an acute angle that conforms to the varmint rifle diagram on page 99. The
barrel shall not be less than 18” long forward of the bolt face and a diameter of not more than
1.250 inches from the bolt face forward 5 inches. From said 5-inch point, the diameter shall not be
greater than would be defined by a straight taper between such point and a muzzle diameter of
.900 at 29 inches. The barrel may be attached to the receiver, bedding blocks or sleeve or
combination thereof for a distance of no more than 4”, measured from the face 5 of the bolt. The
overall length of the receiver, bedding block or sleeve or the combination must not exceed 14”.
(Maximum dimensions shall not include normal scope blocks or sight bases). A metal skeleton
frame that serves as a stock and has a fore end that may or may not attach to the barrel and meets
all other requirements of a Heavy Varmint rifle is permissible (i.e. Beggs Stick Gun). Any “Savage
Type” barrel nut shall be considered as part of the action and therefore shall be legal in all NBRSA
Classes.
2.4. Light Varmint Rifle: Any rifle of not more than 10 1⁄2 lbs in weight, inclusive of sights, and
otherwise meeting the requirement of the Heavy Varmint Rifle.
Rules: Revision #45 Jan 2023
By-Laws: Revision #42 Jan 2023 Page 2 of 68