http://www.mass.gov/dfwele/dfw/regulations/plain_language/hunting_rabbits.htm
"7. HUNTING IMPLEMENTS: Cottontail rabbit, snowshoe hare, and black-tailed jackrabbit
may be hunted with rifle, shotgun (shot not larger than #1), handgun, or archery except:
(a) on wildlife management areas stocked with pheasant or quail, during the pheasant or quail season, only shotgun and archery may be used;
(b) during the hours from ½ hour after sunset to ½ hour before sunrise, handguns are restricted to those chambered not larger than .38 caliber, and rifles to those chambered not larger than .22 long rifle.
This is not the entire law, and is subject to change. Refer to the Hare and Rabbit Hunting regulations in the Code of Massachusetts Regulations, 321 CMR 3.02(10) and to several provisions of the Massachusetts General Laws, Chapter 131."
-You may want to check the specific Regulations and Laws cited at the end of the quote.