ported barrels, are they any good?

Over the last 40 plus years, I’ve had two magnaported revolvers and one S&W PC Compensated 629 (44 Mag).
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The first was an 8 3/8” Model 29 .44 Mag that was sent to Magnaport Arms in the early ‘70s for some custom work – Barrel cut to 5”, action job, hard chrome finish and of course the “two port” magnaports. Had no prior experience with S&W .44 Mags and it was my sole .44 Mag, so I have no “ported vs non-ported” comparison to contribute. If Memory says it never seemed objectionably loud (always used hearing protection). Always regretted trading that one off.
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The second gun was a 6” Freedom Arms .475 Linebaugh that I bought used (it had already been magnaported). I later acquired its twin that was unported. Always seemed that muzzle flip was less with the ported gun, however both were a handful with full on .475 ammo. Couldn’t tell any diff noise wise between the two .475s, but when shot one after the other, a non ported 4” S&W M329, was noticably louder than the ported .475. Verified on several different occasions with different observers.
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And lastly, the aforementioned S&W Performance center 7 ½” comped .44 Mag. This was a large gun to begin with and recoil/noise was never really an issue. It didn’t seem to recoil (muzzle flip) as much as a full lugged 6 ½” 629 Classic DX but the diff was negligible.
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Never shot any of the above close to the body, so ejecta was never a consideration.
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Actual field experience -- Here’s a quote from one of Paco Kelly’s articles http://leverguns.com/articles/paco/special_handguns.htm
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My main carry gun was of course, my famous and somewhat infamous, S&W mod.29 44 magnum...cut to three inch barrel, and Mag-N-Ported, with the grip cut to the Mod. 19 round butt. I carried it in an upside down shoulder holster...it was fast to get into action, extremely powerful...and for me put the stories I hear about muzzle flash blinding you at night, and recoil making the second shot take too long, and a lot of other stuff I read...just that for me B.S. and untried magazine material.
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I never had any of those problems....I fired it in several night time situations without the dreaded "blindness" from muzzle flash....it saved my life in a car one terrible night when I fired it twice...with no recoil slowness problems or blindness. The two individuals that could testify to that directly, unfortunately for them, are too busy reaping their reward for misspent lives in another world, to answer any questions.
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Not that the baby beast didn’t give off a horrible roar and a good deal of muzzle flash. It did! But the flash was always too short in time, to blind. And the muzzle blast I found, was great because it scared the hell out of my adversaries. My ammo was Winchester’s famous commercial loading that had a gilded lead Keith type 240 grain bullet doing about 1100 fps from the short barrel. Like a big fist with a 640 lb punch!
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FWIW,

Paul
 
Never tried firing my 460V without the compensator (different than just top porting) but I can tell you, the muzzle blast directed to the sides and out the top by the comp will clear your sinuses! Looking at the side vents on the comp, you can see that it vents the gases out on a slightly rearward angle.

I have to think it will in fact make the blast and noise more intense for the shooter... Think of it like where you stand while observing a friend firing a 30-06 or something along those lines.. If you are behind the shooter, you get the noise and blast at about the same level the shooter does... But if you stand along side (not ahead of) the shooter, you will experience more blast based on how your position relates to the muzzle..

I don't think it will make it louder by the numbers on the DB meter, at least by any significant margin. But I would say it will make the blast and noise experienced from the shooter's prospective more intense.

Its all about sound and pressure waves and how they are projected out of the muzzle. How intense it is for the shooter is relative to the shooters proximity of and the direction those waves are projected.
 
Any firearm recoils around the center of gravity of the gun itself and the gun/hand system. In most handguns, the barrel is above the center of gravity of the gun/hand mass and the result is that the barrel moves upward. Porting creates a counter to that "flip" by directing some of the high speed gas upward so the jet effect tends to push the muzzle down.

A few years ago, porting was the fad of the year, with every gunzine having several articles on porting, the different systems, range "tests" to prove that the magazine's favorite shop did (surprise!) the best work, etc.

I tried a few ported guns (nothing like the .460, though) and decided that the reduction in recoil came at too much cost in terms of extra noise, flash and blast. I never did have any of my own guns ported.

Jim
 
Only experience has been a S&W 629 Classic 6-1/2" ported revolver. Does the port help with recoil. I have nothing to campare it to that would be meaningful, but I can say that it was a 'Sweet' revolver to shoot with 'Full house' ammunition (commercial 240, 250, 300 grain, Black Hills, Winchester, Speer, Hornady, Buffalo Bore). I only got rid of it when I bought a Desert Eagle in .44 magnum. Hand gun weight makes more of an impression on recoil for me than the port, so I suspect the 7-1/2" unported S&W 629 Light Hunter might be prove to have less recoil than a 6-1/2" port 629 Classic. I do not enjoy shooting magnum loads in lass than a 6" hand gun and from the minimal help with the 629 Classic I will never buy one that light. Good luck with your quest. When you decide on one do post the results you obtain and your opinion.
 
I have a S&W 629 in a 3" ( the Trail Boss ) ...and its an RSR gun that was ported../ in that short a barrel it helps with muzzle flip a lot in full power .44 Mag - in such a short barreled gun.

I don't see it as big a factor in .357 mag...but it will reduce muzzle flip in that caliber as well.
 
On 45 acp, not worth porting. Yes on the 44 mag or larger revolvers. But do wear ear protection. After a few firings, the red will turn black using cast bullets and lead deposits will be near the ports. All comes off with #9.
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I have a G19C with a ported barrel. The only comparison shooting I've done is against my son in-law's G26, and the muzzle flip is noticeably slightly less. Maybe not a valid comparison but that's all I have right now.
 
I don't have a lot of experience with ported handguns.On a range,I wear ear protection.That mitigates the noise issue,on the range.
But when I am out in the big outdoors,I do not always have ear protection on.

Under those conditions,the noise of a ported gun can be quite sharp and painfull.

A particular example is a 44 Automag that was my brother's.Fun gun when he first got it.Then he had it Magna-Ported.Honestly,I don't remember the effect on recoil.
I only recall it became so loud that without ear protection,after a round or two,I was done.It stopped being fun,and was no doubt harmful.

My brother soon sold the gun for that reason.

I have shot a comped 38 Super race 1911 and a comped Clark .460Rowland.In both cases,the comps were quite effective.In both cases,I was wearing ear protection.I can't comment on the noise .
 
I'm not as worried about noise because I would never fire any gun, even a 22, without ear protection. I know too many people who lost their hearing to the loud boom cars of the 90s to risk being another one.
 
The amount of change in the recoil impulse depends on the type of porting used to vent the gas, and contrary to what some may believe the 45acp can benefit greatly with the proper porting.

The first porting I'll discuss is the mag-na-porting type, this type of porting does not change the recoil impulse a great amount, is in most cases located closer to the muzzle end of the barrel, it does help some about 20% reduction in muzzle flip.

The next type of porting is Hybrid Porting as what's found on Schueman Hybrid ported barrels, the ports start very close to the chamber end of the barrel and continue out to very close to the muzzle end of the barrel.
Recoil impulse will be changed a noticeable amount even with 45acp as the Hybrid ports give a 50% reduction in muzzle flip.
The trade off for this reduction is a loss of velocity, however the velocity can be gained back with good handloads.

The next type of recoil reduction is compensators.
A compensator is a device which consists of expansion chambers, baffles and ports.
Depending on the load being shot in a gun with a compensator and the compensator design the recoil impulse and muzzle flip will be reduced as much as 70%, most will be around 50%.
With a good compensator muzzle flip and the recoil impulse itself will be changed a noticeable amount and there's no velocity loss.
For a compensator to work at it's best it must be threaded on the barrel or built into the barrel, the bore diameter of the compensator must be very close in diameter to the caliber of the bullet being used.

The most effective recoil reduction will be with the combination of a compensator and hybrid ported barrel.
With this type of setup the recoil impulse will be changed a great amount 70% plus.
There will be some velocity loss because of the Hybrid ports but it can all be gained back with good handloads.

I recall a 9x23 racegun I built that used a Caspian X Comp and a Hybrid ported barrel, the recoil impulse was nothing more then a slight bump in the hand, no muzzle flip and the red-dot of the C-More sight never left the target, this baby sure vented a lot of gas.
 
I have Weigand Combat Handguns "Tame the Beast" conversion of the Ruger SP101 357 Magnum. It came Hybraported barrel.

I have experienced none of the down side characteristics listed here. I did chose my ammo partially based on low flash for low light firing. What I have noticed is that I can fire 5 full power 125 grain JHP's as fast as I can cycle the double action only trigger with almost zero muzzle rise. An identical .357 SP101 I own I very difficult to control without the ports.

I also have G29 Glock in 10mm that has been Magnaported. With full power 180 grain 10mm ammo at 1250 fps it is easier to shoot and control than my .40 S&W G23 with 180 grain ammo at 1000 fps. Again, no ill effects noted other than flash with some types of ammo.

YMMV
 
Don't overlook the simple fact that gas directed upward to tame barrel flip is not being used to propel the bullet. So any porting in the barrel (as opposed to an add-on device like the Cutts) will reduce the bullet velocity and energy compared to the same length barrel without the ports.

Jim
 
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