AUTOMAG

Very true HotGuns!!!!

Gunnutty

+1 to having a Colt Delta Elite ported. They did a great job and it made a difference recoil wise. No regrets.

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HotGuns

For those that don't know, there are 2 different ways to "port" a gun.
One is through conventional machining processes, usually with a milling machine and a small end mill or drill. The advantage is that you can get pretty creative with the hole patterns, size, shape, location. The disadvantage is that it can leave burrs in the bore that are hard to get out.

The other is the EDM process, or Electrical with an electrical arc to vaporize the metal. Most people do not have the equipment to do this. Magnaport and a few others do. The main advantage of this is that is leaves virtually no burr in the barrel and its a very clean cut. Virtually any shape can be machined into it by machining the carbon electrode used to blow out the hole. Also, it can be used for very hard heat treated metals that would eat a regular end mill or drill up.

For revolvers, the hole is machined in the end of the barrel.The semi's like Automag's .45 must have the barrel machined and then a corresponding hole machined in the slide. One might take note that the Magnaports usually use a trapezoidal cut that forces the gas to deflect sideways rather than up...and that is a good thing. The negative is that is isn't quite as effective as porting that is on the top of the barrel, but you don't run the risk of getting hot gas or particles in your face either. Its a trade off really.

On the big calibers,like on a .50 BMG rifle...the porting is absolutely required.Its the only way you can shoot the gun more than once. Porting does have its place.

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AR. CHL Instr.

One of Satan's greatest achievements is to fool you into believing that he doesn't exist.

Dolphin

Do you have any knowledge of Gemini customs work ( Revolver)?

SelfDefense

Thanks, QKShooter.

I have a couple of questions. They used the phrase 'perceived recoil.' Obviously, the energy of the forward momentum must be conserved. It seems that that the energy change must be from a lower bullet velocity or the opposite force directed angularly from the line of sight. So, instead of a muzzle flip upwards the muzzle will be directed in another direction. Is this correct?

Wouldn't this be a problem if one were to use a ported weapon for competition or practice and then use a non ported weapon as an every day carry? Muscle memory would cause a different reaction for follow up shots.

Clearly, the ballistics of the bullet will change signficantly. Not only the initial velocity, but also the spin/rotation. While insignificant at close ranges,at longer ranges it would impact accuracy significantly. Is this an issue?

Does the porting create a non repeatable change in the rifling pattern making it difficult or impossible for a forensics investigator to match a gun with a bullet?

HotGuns

No Sir I do not.

I have shot several that were Magnaported and several others' designs.

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AR. CHL Instr.

One of Satan's greatest achievements is to fool you into believing that he doesn't exist.

retsupt99

Got one of my best 'tans' using a ported snubby...

I would not own another ported/compensated pistol...no need...OMO

Stay armed...without a ported pistol...stay safe!

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QKShooter

Strike that first sentence of mine here. I'll edit myself here.
Magnaport claims NO loss of velocity or accuracy so I'm am best guessing that the combustion gases have already done their duty getting the projectile to speed before the gases are bled through the ports.
I remember an old chronograph test with the 1911 and precision reloads where the average velocity loss was 10 FPS or some other basically insignificant amount.

There is both a perceived reduction in felt recoil and an actual reduction in muzzle flip. (equal and opposite reaction sort of thing)
The muzzle wants to flip up the expelled gases jet the muzzle down.
Though the lessened degree of muzzle rise is is not incredibly significant in a handgun you are able to get exactly back onto target a bit quicker.
Personally I am not very recoil sensitive but, people who are bothered by abrupt recoil do report easier and more tolerable shooting with Magnaport especially in the snappier handgun calibers.

I know that with my 2 large game rifles there was no measurable accuracy loss and my one snub was quite accurate but, how accurate it was before - I don't know because I had it sent to MagNaport for porting - an action job & internal and external plating right out of the box before I ever shot it.

Concerning the forensics of it all - I have absolutely no idea.

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Picketeer

Understand the ported guns really make a spectacular fireworks display at night..........I have even heard that it kinda blinds the shooter even. Don't know this for sure......only what I have read!

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HotGuns

It does not affect or alter the bullet in any way.

It does not change the ballistics. The spin rotation is unaffected. It is not an issue. I have shot several high powered rifles out to 1000 yards and hit the target, so it dosent appear to affect that. The only way that the velocity may be affected is on a short barreled gun in which the powder burn is incomplete. Holes in the barrel will lower the velocity somewhat as compared to the same length barrel without them.

Make sense?

__________________
AR. CHL Instr.

One of Satan's greatest achievements is to fool you into believing that he doesn't exist.