I would advise against any high capacity quivers... just to be safe
There are public archery ranges like the park in needwood
Here's a question...
Are there any laws/restrictions against shooting a crossbow in a public park (in Baltimore county, for example), assuming it's otherwise safe to do so? (Far enough away from houses, adequate backstop, etc.)
unregistered arrows are illegal.
There are no state laws on target archery, period.
However, Counties very frequently have regulations on where it is legal to discharge bows. In Baltimore County it is illegal to discharge a crossbow in any metropolitan district of the county (§ 17-2-101). All police stations are required to keep publically available maps designating which areas fall within the meaning of metropolitan district.
In addition, is a violation of county park rules to bring weapons into a public park.
China invented the Assault Crossbow over 100 years ago.
http://crossbow.wikia.com/wiki/THE_CHINESE_REPEATING_CROSSBOW
Besides guns and the weapons listed in the PPA statute your fine. With that being said its all how you use the weapon if you get in an argument and pull it out of your trunk and aim it at the guy, well your in trouble. If your driving around and it's in your trunk your fine.
China invented the Assault Crossbow over 100 years ago.
http://crossbow.wikia.com/wiki/THE_CHINESE_REPEATING_CROSSBOW