Yes. Most straight walled pistol catridges like 9x19, .38spl, .357, .44mag, .45acp will get an increase of 20-40% out of a typical rifle(16"-20") bore compared to a pistol/revolver length bore.
That ofcourse increases effective range and terminal performance of the projectile.
Biggest gains there are around 20% by going from 5 inch barrel to 18 inch and all with lighter hollow point and many times with +P ammunition, both go against what usually .45 automatic coper pistoleros larp about it.
yeah, that's his recent video. these are all concerning revolvers which vent SOME powder through the side of the gun (forgetting specific term), mind you.
Most pistols have 4-5 inch barrels including chambers and 9x19 Parabellum is a high pressure round, I think it could easily gain from another inch or two.
As for rifle length barrel , that's a bit vague. Rifle barrel length had been redefined with each new generation of long guns; If you mean 14.5-20 inches which is standard now, I would say no. But something like 6-10 inches would give you both extra velocity and accuracy.
It depends on the powder used to load it.
But once you exceed the length of barrel vs. the amount of gas volume, you will lose velocity. You can actually have a long enough barrel that the bullet's inertia will create a vacuum and would never leave the barrel.
>But once you exceed the length of barrel vs. the amount of gas volume, you will lose velocity. You can actually have a long enough barrel that the bullet's inertia will create a vacuum and would never leave the barrel.
I'm sure all of that is completely new to the guy who specifically asked how long a barrel you'd need for the bullet to stop entirely.
A trick question; in truth never, since the bullet would stop because of pressure difference between the expanding gas in the barrel behind it and atmospheric pressure -.not friction.
Unless we assume firng in vacuum, then at some point the pressure behind the bullet would be so low, that the friction would stop it.
You can get the length from weight gunpowder, avarage volume of gas from 1g of gunpowder and volume of barrel.
Ok but what if its long enough that the barrel space behind the now-fired bullet becomes large enough to fully accomodate the amount of gas caused by the explosion?
I.E. the gas is spread across so much barrel that it reaches equilibrium with the outside atmospheric pressure.
Like really long
Long, but not as long as my dick
Better question, does a 9mm round become significantly more deadly out a rifle length barrel?
Yes. Most straight walled pistol catridges like 9x19, .38spl, .357, .44mag, .45acp will get an increase of 20-40% out of a typical rifle(16"-20") bore compared to a pistol/revolver length bore.
That ofcourse increases effective range and terminal performance of the projectile.
Increase of muzzle velocity, I meant to say.
.45 ACP does not gain any significant velocity from barrel longer than what is in standard 1911 pistol to warrant the extra weight.
It doesn't even gain the 20% with lighter rounds, fmj is literally no gain.
http://ballisticsbytheinch.com/45auto2.html
Neat.
Biggest gains there are around 20% by going from 5 inch barrel to 18 inch and all with lighter hollow point and many times with +P ammunition, both go against what usually .45 automatic coper pistoleros larp about it.
.45 ACP is a joke cartridge, deal with it.
Velocity gain drops off pretty quick when you go beyond the sweet spot, pic related is for .357
yeah, that's his recent video. these are all concerning revolvers which vent SOME powder through the side of the gun (forgetting specific term), mind you.
Fair point.
Do take note of the cylinder blowby gas
And yet 357mag leverguns spit out 158gr at 1800-2000fps.
Blame cylinder gap, unironically. At longer barrels it is easier for a gas to escape thought that small gap than to push bullet.
lever guns don't have same problem as revolvers.
Most pistols have 4-5 inch barrels including chambers and 9x19 Parabellum is a high pressure round, I think it could easily gain from another inch or two.
As for rifle length barrel , that's a bit vague. Rifle barrel length had been redefined with each new generation of long guns; If you mean 14.5-20 inches which is standard now, I would say no. But something like 6-10 inches would give you both extra velocity and accuracy.
long enough
It depends on the powder used to load it.
But once you exceed the length of barrel vs. the amount of gas volume, you will lose velocity. You can actually have a long enough barrel that the bullet's inertia will create a vacuum and would never leave the barrel.
>But once you exceed the length of barrel vs. the amount of gas volume, you will lose velocity. You can actually have a long enough barrel that the bullet's inertia will create a vacuum and would never leave the barrel.
I'm sure all of that is completely new to the guy who specifically asked how long a barrel you'd need for the bullet to stop entirely.
Twelve feet should stop all 9mm loads, or do so for most loads.
2,358 Km
A trick question; in truth never, since the bullet would stop because of pressure difference between the expanding gas in the barrel behind it and atmospheric pressure -.not friction.
Unless we assume firng in vacuum, then at some point the pressure behind the bullet would be so low, that the friction would stop it.
You can get the length from weight gunpowder, avarage volume of gas from 1g of gunpowder and volume of barrel.
Ok but what if its long enough that the barrel space behind the now-fired bullet becomes large enough to fully accomodate the amount of gas caused by the explosion?
I.E. the gas is spread across so much barrel that it reaches equilibrium with the outside atmospheric pressure.