I had a go at it a couple of days ago, you get a lot less ballistic ammo now, about 850 rounds instead of about 3000, and you can't just BRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR them until you run out, they over heat after short bursts but are also devastating on the target, pew pews while infinite are similar, they run out of charge after short bursts and if you keep using them right after a charge cycle over and over again the charge and fire rate slows.
Its clearly designed to make you use your noggin, if you don't, if try to spray and pray you will be defenceless in under a minute.
I like it.
I did forget to try out missiles, i might go back and do that at some point, the 325A has a pair of size 4 racks in a trap door on the underside between the wings, they have never worked and given that now you can select between different missile types you may have installed before firing them its worth testing to see if they finally fixed it, those twin size 4 racks along with the size 4 chin mount are what make the 325A the one with the punch out of the 300 series line, would be nice to use those size 4's.