Min is 10 and you better make sure the bullet does not cross the fence line or your nieghbor good press charges on you. For it is against the law for any projectile to cross fence lines without permision from the land owner.
that is NOT TRUE!!!!! i lived on 6.4 acres, and it is NOT ILLEGAL for me to shoot any gun i want to on that land, and i ahave no problem keeping my projectiles within my 6.4 acres!!! except one time when i was about 12 and i shot a bird off my tank dam, and the pellets came down on my neighbors house.... they called the deputy.... he told me "dont do that again" i said yessir lol.
where are u getting this ten acre min rule?