And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Friday, May 15, 2026
Surprising how much gas escapes in front of the bullet
The air ahead of the bullet is pushed out in a millisecond. It becomes very hot from compression and thus cools off like a cloud when ejected. If the bullet didn’t deal the bote there would be a jet of fire coming out first. Once beyond the muzzle it instantly starts to slow down, and is over taken by the gases behind the bullet which are actually moving at least twice as fast as the bullet.
I suspect some of the gas is the air in front of the bullet getting compressed by inertia. Could be propellant 'fumes' leaking past before the bullet fully seats. Could be residual oil / cleaning fluids in the barrel.
yup. why do you think they make hollow base bullets for ? they figured this out back in the 1880's.
ReplyDeleteInteresting..
DeleteThe projectile has not yet conformed with the groove and lands in the first microseconds so some blow by occurs.
ReplyDeleteYou've been smoked, may apply.
ReplyDeleteThe air ahead of the bullet is pushed out in a millisecond. It becomes very hot from compression and thus cools off like a cloud when ejected. If the bullet didn’t deal the bote there would be a jet of fire coming out first. Once beyond the muzzle it instantly starts to slow down, and is over taken by the gases behind the bullet which are actually moving at least twice as fast as the bullet.
ReplyDeleteSeal the bore, i meant
DeleteCompressed air can be seen because of refractive index difference. Not as as smoke.
DeleteWeird prolapse
ReplyDeleteGood reason to wear gloves when firing a short barreled revolver with magnum rounds.
ReplyDeleteThat is a great picture.
ReplyDeleteYou can see how much the slide traveled backward by the "reset" from end-to-start.
You can also see some smoke venting upward from the breach.
A lot is happening in that set of images.
I suspect some of the gas is the air in front of the bullet getting compressed by inertia. Could be propellant 'fumes' leaking past before the bullet fully seats. Could be residual oil / cleaning fluids in the barrel.
ReplyDelete