this is what i was just told by SAUGUS Mass police dept for shooting my 22 cal pcp in my backyard was shooting spinners at 40 yards good back stop im on close to 3/4 of a acre have 60 yards of property behind my backstop officer told me any projectile over 500 fps is a nono that i must be 500 ft from a street this is not how i read MASS law who doi see about clearing this law up any input is helpful thanks pat