What movie guns can be fired with no blank adaptor?
 

Wondering, is there anything that will cycle blanks without any adaptor?

Yeah, a mini gun..... :D Other than that, only manually operated guns will cycle with blanks and live rounds interchangeably.

A revolver doesn't need a blank adaptor.

A Gatling Gun probably doesn't need any adaption. Bolt guns, lever guns, anything that doesn't fire semi/full auto basically.

But NO semis can cycle blanks?

no without blank adaptors

No. Semi-autos depend on the force of the pressure and/or gas generated by the projectile exiting the muzzle to cycle. Blanks don't really have a projectile, so they don't generate enough force to cycle the actions unless the barrel is partially plugged (the blank adapter/restrictor basically serves the same function that the bullet itself would serve in normal operation).

blank guns
 

There are a couple of semi auto shotguns that will cycle without blank adaptors but the FFXhot loads must be used. They function at about 90% which is not reliable enough to take chance with during filming. This is mainly due to the inconsistant nature of shotgun blanks. Add a slight restriction and the consistancy of the burn and pressure increases.
The Milkor M32 40mm although not a true gas operated semi auto will work on a 12ga or .45-70FF load. These loads develop a pulse that will depress the spring loaded cylinder pin which lets the pre wound cylinder advance to the next position. It fires as fast as you can pull the trigger.

4570guy

What about autos that can be adjusted for gas pressures? Could you tighten the gas enough to cycle blanks?

If you have one of the few handguns that use a gas impingement system rather than recoil (P7, Desert Eagle, don't know what else) it's still going to need a projectile in order to function. The only reason the impingement works as well as it does is because it is actuated between the points where the bullet passes the port of the gas tube and when it exits the muzzle at which point any pressure subsides. Without a projectile you won't get enough pressure in the muzzle to cycle anything no matter how much you adjust.

At least, that's 'common sense' from my end.. Can't say I've ever worked with prop blanks so I can't say for sure.

yes, I can cycle my semi auto shotguns with super hot blanks, but they crap out after three shots. I can fire the SPAS 12 about 3 times before it jams up. Therefore (like you already said) NOT blank adapting them is not a viable option due to the unacceptable probability of failure during a take...

Funny story about adjustable gas systems, on another gun forum a member who was in some european military said they'd compete with the U.S. switching weapons for fmailirization, and would shoot their own with the gas system set to soft shooting (FN FAL) and then adjust it to kick like a horse when U.S, soldiers fired it, and the U.S. soldiers would be like "hey how were ypu controlling those things!!!!"

We have blanked just about every caliber of Desert Eagles. There is a lot more to it than restricting the bore. We have to relocate the gas port and then plug the barrel with a plug of x length. The Desert Eagle to convert is a science and you better know what you are doing as you only have one chance. After that it a new barrel and you start over again.

How much of a toll does firing blanks take on a gun, especially if you paln on using it when it's done with blanks?

Well it depends on the weapon and the mods. The blank mods usually they don't harm the receiver during the conversion or operation. I have seen some conversions that use blank so hot that they will destroy the receiver over time. If you have someone that knows what they are doing it should be okay. I you plan to go back to live fire again you need to purchase a separate barrel and slide assembly for a hand gun. That way you original can be kept for live and the replacement for the blank conversion. The main thing to do if that you do that is to always check the weapon when you go to shoot live rounds. You don't want to have a blank barrel in when you fire a live round.

Unless you want the gun to blow up. Then it might wear out a little faster :D.

Back in the days of the FN C1 and C2, that used to be a favorite trick to play on the new guys. Espescially with the C2.