Here's a question: does a ported barrel affect the distance that shot travels? Since the ports allow some of the gas, and energy, to be displaced from going out the end of the barrel, I know it dampens muzzle jump; not so much recoil. But does this also reduce the energy behind the shot itself, thereby reducing the distance the shot flies? (Since I don't have a long handicap, I haven't noticed any change in the appearance of targets breaking when using the barrel, with 7 & 1/2, 2 & 3/4, 1200 fps, 3 dr. equivalent AA's.) Thanks for any info, or direction to any former posts and discussion. Just curious.
Effect of ported barrel on shot performance
Paula N.
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Gas operated auto loaders bleed of a certain amount of pressure too. Doesn’t seem to affect performance much. I do have a couple of ported guns, other than the barrels being slightly more of a pain to clean, I don’t see much difference. Certainly no performance gain.
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How about a Short barreled ported gas operated auto loader?
that should blow some minds !
that should blow some minds !
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We don’t have porting down here. Because of the Coriolis effect, we have starboarding.
Our club requires adequate hearing protection.
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Since you are south of Kentucky (south of the equator) does your trap range face north or south and how much does your lead change regarding Coriolis effect? Does shot size vary your lead?
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The only impact porting has is on the buyers pocketbook. A pox on porting!!!
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Interesting that Browning who manufactures a large number of shotguns with factory porting has never really published a comparison spec sheet with lets say the same model citori with same bl. length one ported and the other not to show potential buyers "here is the difference"
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Pressure-distance curve for modern fast shotgun powders from the Alliant site for 1 1/8 oz. 1200 fps (trap) loads. At 15" the pressures are less than 1000 psi.
![[IMG]](https://lh7-us.googleusercontent.com/zXMiMTWCMLTiYFJ_rK6cv2SBJcUOPvdVYOBZiVYJbY8ahn-4c_-EWb-sHaDshJw4VMypJuMnGwAucv8siObcSLMqsLCv2b5jWvbIvoL16SdSstra1pxmd1CvCodRBpqjVi2iIx2K57pKWZo4fueRGQ "[IMG]")
At 32" the pressure is still about 460psi, which is still pushing the wad/shot column forward. How much the velocity with a 34" barrel length is reduced by porting is above me.
The effect of reduced muzzle jump by porting has been videoed and posted on here before. It was eye opening, but I'd have to search more to find it.
My Unsingle barrel is not ported, the gun fit is fine.
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Many moons ago Cutts Compensators were very popular on Model 12's, 31's etc, it was considered and enhancement that helped sell the guns. Shooters preferences changed and add on chokes became dinosaurs.
In the 80's porting was the hot idea, you could get them while you waited at major shoots. Lots of quality guns, (Perazzi, Beretta's etc) were ported. These guns are still in service, still quality but with the porting. I have a Tom Seitz TM1 that is ported in his style, I don't worry over the ports I just shoot it and enjoy what I feel is superior barrel smithing! I would buy an MX8 with porting over many other later brands without ports!
In the 80's porting was the hot idea, you could get them while you waited at major shoots. Lots of quality guns, (Perazzi, Beretta's etc) were ported. These guns are still in service, still quality but with the porting. I have a Tom Seitz TM1 that is ported in his style, I don't worry over the ports I just shoot it and enjoy what I feel is superior barrel smithing! I would buy an MX8 with porting over many other later brands without ports!
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So does ours, but I know 2 guys who use the adquate stuff and still complain about ported barrels. Perhaps they just don't like the type of sound.
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Charlie, when I was in South Africa, all of the trap ranges pointed (generally) south.
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Having owned shotguns with and without porting, I did not notice a different in recoil while the ported shotgun was louder. I didn't see any benefits, but marketing.
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From what I see, the porting isn't so much to mitigate recoil as it is to mitigate muzzle rise after the shot.
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You bring up a good point, but I didn't see that proclaimed benefit either. I just didn't see a single benefit at all, but maybe I was missing it.
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