Ported Barrel
10-30-2002, 05:06 PM
#4
Nontypical Buck
Join Date: Feb 2003
Location: Elizabeth Colo. USA
Posts: 4,413
RE: Ported Barrel
So, DG, why do some pistols and rifles have ported barrels, someone must believe that porting reduces recoil!! I'm not flaming, I'm just asking. Do pistols and rifles not benifit from porting?
10-30-2002, 06:37 PM
#7
Nontypical Buck
Join Date: Feb 2003
Location: Coralville, IA. USA
Posts: 3,802
RE: Ported Barrel
Porting and muzzle brakes work to reduce/redirect recoil buy changing the direction of the gas' thrust.
In a normal barrel the bullet and all of the gasses created accelerate almost straight out the barrel. The equal and opposite reaction is that the rifle tends to accelerate backward into the shooters shoulder. As we all know, the heavier the bullet and powder charge (the mass of ejecta) is, and the faster accelerate both causes recoil to increase.
By adding a muzzle brake like the Browning BOSS some of the gasses leaving the muzzle, and the thrust they produce, are redirected outward in a ring rather than forward, which reduces the amount of recoil on the rifle and shooter.
Porting works in a similar but usually less efficient fashion, usually with other goals in mind as well. Pistols, especially large magnum revolvers, often have ports cut into the top of the barrel toward the muzzle. These cause some reduction in felt recoil, but primarily serve to control the tendency of the muzzle to rise (muzzle flip) which serves to increase shooter comfort and control and allow faster more accurate follow-up shots. Shotguns usually are ported for the same reasons. Like I said, porting tends to be less effective at reducing actual recoil forces than a muzzle brake is.
Military rifles, like the M16A2, use a "compensator" to reduce muzzle climb while in burst mode, reduce muzzle flash, and direct muzzle blast away from the ground to prevent dust from being kicked up by a prone shooter.
Mike
Gun control means putting the second bullet through the same hole as the first- Ted Nugent
NRA Member
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -Ben Franklin
In a normal barrel the bullet and all of the gasses created accelerate almost straight out the barrel. The equal and opposite reaction is that the rifle tends to accelerate backward into the shooters shoulder. As we all know, the heavier the bullet and powder charge (the mass of ejecta) is, and the faster accelerate both causes recoil to increase.
By adding a muzzle brake like the Browning BOSS some of the gasses leaving the muzzle, and the thrust they produce, are redirected outward in a ring rather than forward, which reduces the amount of recoil on the rifle and shooter.
Porting works in a similar but usually less efficient fashion, usually with other goals in mind as well. Pistols, especially large magnum revolvers, often have ports cut into the top of the barrel toward the muzzle. These cause some reduction in felt recoil, but primarily serve to control the tendency of the muzzle to rise (muzzle flip) which serves to increase shooter comfort and control and allow faster more accurate follow-up shots. Shotguns usually are ported for the same reasons. Like I said, porting tends to be less effective at reducing actual recoil forces than a muzzle brake is.
Military rifles, like the M16A2, use a "compensator" to reduce muzzle climb while in burst mode, reduce muzzle flash, and direct muzzle blast away from the ground to prevent dust from being kicked up by a prone shooter.
Mike
Gun control means putting the second bullet through the same hole as the first- Ted Nugent
NRA Member
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -Ben Franklin
10-30-2002, 08:05 PM
#8
Giant Nontypical
Join Date: Feb 2003
Location: PA
Posts: 9,085
RE: Ported Barrel
wow drift wood...you definently know your stuff(least it sounds like it lol)..thanx for filing us in...i never knew the real reason it was there just what i heard...i heard close i suppose lol..
mauser06
mauser06
10-31-2002, 05:39 AM
#10
Nontypical Buck
Thread Starter
Join Date: Feb 2003
Location: NC
Posts: 1,284
RE: Ported Barrel
Thanks for the imput! The reason i ask is because i'm looking at buying an H&R single shot rifle in 30.06 caliber and it has the compensated barrel on it. I never knew what it was for, i know i've heard it made the gun a little louder but I knew that H&R had to put it on there for reasons other than that. Again thanks!