Not familiar with the Assault Weapons Ban? Gun law is made by morons.

Is it possible that it was actually a joke, and he meant "gay" as in "happy"? Admittedly, Arnie's never struck me as a guy whose command of the English language (or intelligence) would allow him to think up such subtleties, but it's something to consider.

How many pull thru patchs, litres of "break free" and swear words did you go through cleaning all that?

It was a lot of cleaning which everyone pitched in when I showed them what to do. It worked out to about 3 hours after wrap to prep guns and reload mags for the next day. That was everyday for 3.5 months and swear words I lost count on how many.

It was amazing seeing the empty crates and cases stacked the outside the trailer that just continued to grow.

Using "gay" to refer to "happy" isn't really a common expression anymore (it's more old english IMO), and like you said, Arnie is really the most eloquent person out there when it comes to the English language. But it could maybe, possibly be possible.

More than likely it was a Freudian Slip, since he was talking about gay marriage in the first place. It's not a big deal though. ;)

Back on topic again, I may have to consider Predator as a top one on the list, since the clearing of the forrest likely took more than one take and easily 1000s of rounds were fired in each take. (God knows how many times that Minigun backpack was reloaded, since in reality it went empty every five seconds)

actors
 

Dunno about blanks and the definition of "actors" (holders of a Screen Actors Guild card?).....But real ammo has to be the cast of Myth Busters.

Wow
 

I can only imagine the response had I posed an even remotely political question.
To those who stayed on topic..thank you. Yes..Starship Troopers did hold the record for most blanks let off during a production.
To those who went off topic....I enjoyed that too. Well done to all.
As for the .50 cal "experts"..think Raufoss rounds...or SLAP rounds..and you'll certainly see some of the major damage you contend are wish list items of movie directors.

SLAP isn't magic, I'm afraid, it's still not going to do a whole hell of a lot to an armoured rail car [4.25 inches of stainless steel, then 1.5 inches of depleted uranium, then 0.5 inches of lead] and would pass straight through a human without throwing them anywhere. And if you shoot a human with a Raufoss, statistically 50% of the time it will pass right through them before detonating. You're still not going to see people sent flying into the air unless you're shooting a brick at them because the physics of it just don't work.

I've heard people say the Raofuss rounds could severe arms much like we see in COD4, but I'm not too inclined to believe them. Who exactly decided a .50 cal needed more punch? Or should I say "slap"? :D

I've heard stories of that happening, and I can see how if you hit a joint the tissue damage might be enough to sever an arm. But you're still not going to be throwing people into the air due to simple physics; the human body just can't offer enough resistance to the bullet to make the bullet transfer that amount of energy to it, and the bullet's point will make it pierce the target rather than shove it backwards.