If the amount of explosive is reduced enough, even a blank could be fired without damaging a gun with a blocked barrel.
Without claiming any special expertise, I disagree heartily.
Firing a blank causes powder and bits of casing to exit the barrel with sufficient force kill at close range. Reconfiguring the blank to avoid the discharge means making it into something that is no longer a blank.
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A machinist can make a fake gun that appears real which can fire modified blanks but not caps or actual bullets. A machinist can make a fake gun that appears real which can fire actual blanks or modified bullets and real caps. An armorer can make a real gun that can fire bullets that look real but aren't.
It is within the realm of possibility that somewhere in your posts you have an actual, definable conjecture which I have simply missed.
It is further within the real of possibility that your conjecture matches the reality.
Both cases are far more likely to be wrong than true, though.
On the off chance I have truly missed something, can you please restate for me in a brief paragraph what you are proposing?
skipjack said:
However, what is essentially a cap could certainly be modified to resemble a live round to an inexperienced observer, such as the loader.
I won't close the door on this possibility, but I will insist that the observer must be
very inexperienced and unobservant.
skipjack said:
Certainly, Derren thought there was no risk.
You have no way of knowing this. In the two methods I know, there is risk. The performers control it and minimize it, but there is risk nonetheless.
skipjack said:
However, a few magicians have managed to think that when performing using a real gun and yet make a mistake which results in disaster.
???
skipjack said:
I would expect the magician to be even more cautious than the police.
If I were performing, I would be. What has this to do with whatever your point is?
skipjack said:
Since the "live" ending was actually shown in delay, a few seconds of what occurred could have simply been edited out, and the delay correspondingly reduced.
Theoretically possible. Why should we consider it more likely than the alternatives that real life magicians have assured you exist?
skipjack said:
That would allow Derren time to make sure of which chamber was loaded by the spectator (whilst briefly putting his body between the spectator and the gun, so that the spectator doesn't know) or even to switch the gun with a separate, preloaded gun.
Again, theoretically possible. Again, why should we consider it likely?