USA, states are devided into counties, each indavigual county has it's own rules, www.dnr/md.com i think thats the website with all the rules and regulations, (i'll check it and edit if that aint it), the main rule for hunting in my county is to not hunt within 250 yards of a highway or any kind of man made strucksure ie: house/barn/shed so on so on, it's a 12 gauge with a 38 or 40 inch barrel, factory full choke, it's heavy compaired to todays guns, but still kicks like a freaking mule !!!
TECH TIP---the lighter the gun the harder the kick !! and it don't matter what kind of gun/cannon your shooten or the ammo your useing