lansdale
Member
hi everyone,
i came across some videos of some guy (well maybe i should say nutjob) who converted several german blank guns (kaliber 9mm PA) into live firing .380 acp.
needless to say thats illegal in most countries.
but my question is not about legal/illegal or how dumb the guy is, my question is about the stress the gun gets to cope with when firing that 380 acp.
a german friend was so kind to send me some data about their blank guns.
the 9mm PA blank cartridge (not a regular 9mm para blank) gives a pressure of 400 bar in the chamber. (thats measured 90 degrees on the chamber when firing it into 5.6mm barrel with no projectile he said)
the blank guns are simple blowback design and a huge obstruction in the barrel gives enough pressure for the blowback action to work.
now that nutjob from the videos cut off the obstructed barrel and made a new smoothbore barrel for 380 acp and shows it firing several rounds.
my german friend says his own blankgun has a slide weight of 200 grams, about 0.44lbs. its made by the same factory that makes a 22lr version of it and it shares all major parts.
when looking at the data i find about 380 acp bolt thrust a bolt weight of 500 grams which is about 1.1 lbs.
now i am wondering how this is possible. using a slide that is less than half the recommended weight without the slide getting launched into his face?
i think the chamber pressure isnt a problem, as the chamber in those blank guns is of similar thickness as live firing guns. but its the bolt thrust that makes me wonder.
can anyone shed some light on this? i cant seem to find actual slide weights of .380 acp guns to compare
i came across some videos of some guy (well maybe i should say nutjob) who converted several german blank guns (kaliber 9mm PA) into live firing .380 acp.
needless to say thats illegal in most countries.
but my question is not about legal/illegal or how dumb the guy is, my question is about the stress the gun gets to cope with when firing that 380 acp.
a german friend was so kind to send me some data about their blank guns.
the 9mm PA blank cartridge (not a regular 9mm para blank) gives a pressure of 400 bar in the chamber. (thats measured 90 degrees on the chamber when firing it into 5.6mm barrel with no projectile he said)
the blank guns are simple blowback design and a huge obstruction in the barrel gives enough pressure for the blowback action to work.
now that nutjob from the videos cut off the obstructed barrel and made a new smoothbore barrel for 380 acp and shows it firing several rounds.
my german friend says his own blankgun has a slide weight of 200 grams, about 0.44lbs. its made by the same factory that makes a 22lr version of it and it shares all major parts.
when looking at the data i find about 380 acp bolt thrust a bolt weight of 500 grams which is about 1.1 lbs.
now i am wondering how this is possible. using a slide that is less than half the recommended weight without the slide getting launched into his face?
i think the chamber pressure isnt a problem, as the chamber in those blank guns is of similar thickness as live firing guns. but its the bolt thrust that makes me wonder.
can anyone shed some light on this? i cant seem to find actual slide weights of .380 acp guns to compare
