Security is not an issue , because they screen it and check for irregularities. You may have to explain a bit when you check in, though. if this is a weapons case
The weight however is another matter, but usually it's not a problem either, just that it can cost a lot of money extra if you have over your allowed total weight...I always carry on my MD and SID, though! I have seen what the airline-carriers do to the luggage!!
Seems to me they have a through it as far as possible contest out there every day..