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Additional info via https://twitter.com/winkelsdorf/status/1451439068861116421 https://twitter.com/winkelsdorf/status/1451439068861116421 (translated, a little

Additional info via https://twitter.com/winkelsdorf/status/1451439068861116421 https://twitter.com/winkelsdorf/status/1451439068861116421 (translated, a little condensed): In order to use blanks, the weapon has to be modified because of reduced pressure from the blanks. Otherwise the weapon would not reload (think machinegun that only can do one shot you see the reason). The modification depends on the type of weapon but includes usually some kind of valve/pressure regulator. Also the mechanical elements of the gun are adjusted to because of the lower pressure. Example: A Luger gun "regular" has ~35000 psi(2400 bar), modifed with blanks ~11500 psi (800 bar). If a regular bullet would be inserted, the weapon would most likely explode, so Baldwin would have been injured. Small pieces or dirt inside the weapon would normally not have the size and impact for such deadly injuries. That leaves a high probabilty that the valve or parts of it have been ejected at high speed - too early to speculate why. The vector in which such parts exit the weapon can be different to the direction of the barrel, so again much uncertainty at this point. What you can say is this: Its unusual for the close participants in such filiming scenes to wear protective gear (head, body) - its cumbersome and pricy. And its the same problem everywhere, so it could have happened in asia,australia,europe,... the same way.

mewpmewp2 5y ago
That's interesting. When we used automatic rifles in the mandatory service, we used blanks and live ammo interchangeably. But I think the nozzle in front of the barrel may have allowed to do that. Googling, it is supposed to trap gasses and this may allow for reload.
- codewench 5y ago
  There will (usually) be something called a Blank Firing Adapter used, which is really nothing more than a small plug which blocks the barrel enough for the gasses from the blank to build up, and provide enough pressure to properly cycle the firearm. These work well because they don't really require modification of the rifle itself, and are usually painted bright red to aid in identification. Unfortunately that makes them kinda useless for filming purposes.
  - mewpmewp2 5y ago
    Yeah, you are correct, this is what we used, and during filming that wouldn't look good yeah. I remembered these more like a safety precaution - although sometimes some managed to fire off one of those. Probably we were talked about that how they help reloading for blanks, but I didn't remember. Then there were also machine guns we fired blanks with, I don't remember if we fired live ammo also from machine guns or whether they also had nozzles. Actually, never mind, I think we did also do target practice with machine guns.
neur4lnet 5y ago
That is only true for automatic firearms, and only partially true for them. Usually the modifications are reducing the strength of the springs, or enlarging the gas port. There's really no reason to ad "valves" or anything in the barrel its self. Given the time period of the movie, an automatic firearm is unlikely anyway, so I'd be inclined to think that this is not the case.
- kappuchino 5y ago
  Thanks for the insight/context. Given the source proficient, credible and was in my native language (german), I believed it was accurate.
hilbert42 5y ago
"the weapon has to be modified because of reduced pressure" This makes sense for weapons on a movie set but our army weapons were loaded with both blanks and bullets on a regular basis thus were unmodified. I'm going back a long way now but I still recall being instructed that blanks were dangerous because they used the same or similar charge as did the live ammunition (as I've mentioned elsewhere, they pack a real punch). I wonder if the reason why our blanks were so dangerous was that they were designed to provide sufficient back pressure at the expense of safety (from experience, armies aren't overly enamored with mollycoddling soldiers - even less so decades ago when I was being instructed). I, however, do recall being instructed that cleaning weapons after using blanks was even more important than with live ammunition, as after a firing there was no subsequent bullet to help remove charge residue. A typical example of dangerous practice would be using blanks all morning and then in the afternoon going to the range for target practice without judicious use of one's pull-through (residue buildup potentially leading to one's breach or barrel peeling open). It's also just occurred to me that there may be different practices across different countries and at different times in history (my experience a long time ago may have been different than practice nowadays). For example, for pragmatic reasons, a blank might have an even greater charge than live ammunition to overcome the loss of back pressure there being no bullet. Alternatively, the cartridge's wadding is made deliberately tough or large to provided sufficient back pressure for automatic weapons). As I can attest from injuries, the wadding in the blanks that I was issued with was substantial. Does anyone have reliable facts about this?

mewpmewp2 5y ago

That's interesting. When we used automatic rifles in the mandatory service, we used blanks and live ammo interchangeably. But I think the nozzle in front of the barrel may have allowed to do that. Googling, it is supposed to trap gasses and this may allow for reload.

codewench 5y ago
There will (usually) be something called a Blank Firing Adapter used, which is really nothing more than a small plug which blocks the barrel enough for the gasses from the blank to build up, and provide enough pressure to properly cycle the firearm. These work well because they don't really require modification of the rifle itself, and are usually painted bright red to aid in identification. Unfortunately that makes them kinda useless for filming purposes.
- mewpmewp2 5y ago
  Yeah, you are correct, this is what we used, and during filming that wouldn't look good yeah. I remembered these more like a safety precaution - although sometimes some managed to fire off one of those. Probably we were talked about that how they help reloading for blanks, but I didn't remember. Then there were also machine guns we fired blanks with, I don't remember if we fired live ammo also from machine guns or whether they also had nozzles. Actually, never mind, I think we did also do target practice with machine guns.

neur4lnet 5y ago

That is only true for automatic firearms, and only partially true for them. Usually the modifications are reducing the strength of the springs, or enlarging the gas port. There's really no reason to ad "valves" or anything in the barrel its self. Given the time period of the movie, an automatic firearm is unlikely anyway, so I'd be inclined to think that this is not the case.

kappuchino 5y ago
Thanks for the insight/context. Given the source proficient, credible and was in my native language (german), I believed it was accurate.

hilbert42 5y ago

"the weapon has to be modified because of reduced pressure" This makes sense for weapons on a movie set but our army weapons were loaded with both blanks and bullets on a regular basis thus were unmodified. I'm going back a long way now but I still recall being instructed that blanks were dangerous because they used the same or similar charge as did the live ammunition (as I've mentioned elsewhere, they pack a real punch). I wonder if the reason why our blanks were so dangerous was that they were designed to provide sufficient back pressure at the expense of safety (from experience, armies aren't overly enamored with mollycoddling soldiers - even less so decades ago when I was being instructed). I, however, do recall being instructed that cleaning weapons after using blanks was even more important than with live ammunition, as after a firing there was no subsequent bullet to help remove charge residue. A typical example of dangerous practice would be using blanks all morning and then in the afternoon going to the range for target practice without judicious use of one's pull-through (residue buildup potentially leading to one's breach or barrel peeling open). It's also just occurred to me that there may be different practices across different countries and at different times in history (my experience a long time ago may have been different than practice nowadays). For example, for pragmatic reasons, a blank might have an even greater charge than live ammunition to overcome the loss of back pressure there being no bullet. Alternatively, the cartridge's wadding is made deliberately tough or large to provided sufficient back pressure for automatic weapons). As I can attest from injuries, the wadding in the blanks that I was issued with was substantial. Does anyone have reliable facts about this?