Easy one - I saw you should bring 5 mags to FNS. I understand for my Buckmark 5 mags would probably be necessary. What about shooting my XDm 9 that holds 19 in the mags? Would I still need 5 mags? I just ordered some online, so it doesn't matter either way - I'm just curious. I'm going next month for the 1st time and bringing at least 2 friends. I've read the numbers have been up!