Question

question 5 of 10
how is the caliber of a rifle or handgun determined?
a the length of the barrel measured from the muzzle to the action
b the distance between opposite lands inside the barrel
c the circumference of the barrel when measured from the exterior.
d the length of the ammunition that it can fire
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Explanation:

Caliber in firearms refers to the diameter of the bore (the inside of the barrel). In rifled barrels (which have lands - the raised parts and grooves - the depressed parts), the distance between opposite lands (the diameter of the bore) is what determines the caliber. For example, a.30 - caliber rifle has a bore diameter (distance between opposite lands) of approximately 0.30 inches.

Answer:

B. The distance between opposite lands inside the barrel