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- Maple ridge
What is porting ? What does it do ?
What is porting ?
- Thread starter greekguy76
- Start date
Porting is the process of extracting money from retards and ruining a perfectly serviceable gun in the process. 
Seriously:
What it is: It is the drilling of holes toward the end of the barrel.
What it does: Makes the gun louder, drops muzzle velocity as the barrel becomes only as effectively long as up to the point where the holes are drilled as this is where pressure drops off. Also gives them something to talk about at the range. Gives me a reason to pass it over on the EE.
What people think it does: Creates tighter patterns, looks cool, reduces recoil (technically it does but not in any meaningful amount) makes them a better shot.
Seriously:
What it is: It is the drilling of holes toward the end of the barrel.
What it does: Makes the gun louder, drops muzzle velocity as the barrel becomes only as effectively long as up to the point where the holes are drilled as this is where pressure drops off. Also gives them something to talk about at the range. Gives me a reason to pass it over on the EE.
What people think it does: Creates tighter patterns, looks cool, reduces recoil (technically it does but not in any meaningful amount) makes them a better shot.
What Type of porting: The kind with holes in the barrel.
Really I don't know what kind, but it was done by a "gunsmith", not factory on a mossberg 500.How much shooting with it: Enough to know that I didn't like it. 1 day of clay games in a sand pit. ~250 rounds.
All I noticed was it was louder. We had another Pump 870 without porting and same length barrel for comparison. My friend got a lot of ribbing because he thought it was so nice. We (except the owner) all felt he got robbed.
I say this with the utmost respect for your work Arwen. But I really believe porting is a great means to part a sucker from their money.
As for reducing muzzle jump, perhaps a little if the porting is only on the top, but I never noticed it. The Mossy I was playing with was ported top and sides with an even pattern and on the bottom with a spare patter IIRC.
Edit: I almost forgot, I also shot a ported browning gold in Virgina at an range, but it was only loud too.
- Location
- Maple ridge
So let me get this Straight ! to port my shot gun i go to my shed grab my dewalt cordless and a 3/16 dril bit and have ater? than after that i bury the thing on concrete in my back yard ???? and i getting this right ????
My Baikal over/under came ported from "mother" Russia. I didn't observe to be louder than other guns were shot beside me. As for reduced velocity....I really cannot advance any oppinion. Reading here some posts I understand that my shotgun is a kinda scrap.
I love my Baikal and all my life I have used Russian guns with a lot of satisfaction. Is true this one is the first one ported I've owned.
I cannot enunciate oppinions because is the first time I hear about the dark side of porting.
I'll keep an eye on the issue.
I love my Baikal and all my life I have used Russian guns with a lot of satisfaction. Is true this one is the first one ported I've owned.
I cannot enunciate oppinions because is the first time I hear about the dark side of porting.
I'll keep an eye on the issue.
I have owned two factory ported guns from Browning. I have shot guns ported by Seminole, Angle Port, Briley and Magna Port and shot factory ported Krieghoffs, Benellis, Remingtons, Berettas and Perazzis. I have swapped and compared ported and non-ported barrels between otherwise identical Remingtons and Berettas. Total rounds fired are unknown but given the length of time I owned the ported guns and the variety I've tried it would be in the many tens of thousands.
Based on this experience I don't believe porting alone does much of anything to reduce recoil or improve a shotgun's performance. It does increase the noise to bystanders and makes the barrels harder to clean.
Arwen, having responded to your demand for full disclosure how about you doing the same? How many barrels have you ported? How much do you charge to port barrels? The reason I ask is because in my experience the most grandiose and over inflated claims about the benefits of ported barrels come from the people making money off them.
To answer the original question, porting if done above the centre line of the barrel only will reduce muzzle rise. It is simple physics. The amount depends on a lot of things; the number and size of holes, the amount of gas present etc.
If you want to take a DeWalt or any other drill and drill some holes in your barrel on the top, that will work also in reducing muzzle rise. It might not look very good.
Most things we do to customize guns are not necessary to get the projectiles down range. Just stop and think about all the stuff we add or do to guns and you will get my point.
I have ported 20-30 barrels as part of the Vang Comp System. If you do not want ports, it is $55. cheaper. I do not usually do ports alone unless someone just has to have them. Ports are are only a small part of the total VCS, even though it is the most noticeable part of it.
On that we agree. Much of what is attributed to the ports is often the result of the backboring and lengthened forcing cones.
I've shot two, no three shotguns that were ported, . Mostly on trap singles, some skeet, some hunting. I also have shot several O/Us and many guns NOT ported. I've yet to discern a difference in any regard. But that is due to the fact that each are different guns besides just porting, so I've no way to tell.
The types of guns that benefit most from porting or muzzle brakes are those that have a high ratio of powder charge to projectile weight, such as a .300 Weatherby Magnum or .50 BMG.
Shotguns are likely to benefit little (if at all) from porting, as the weight of the powder relative to the projectile weight is much smaller, and thus the weight of powder being accelerated to some average velocity constitutes a much smaller component of the total recoil.
Shotguns are likely to benefit little (if at all) from porting, as the weight of the powder relative to the projectile weight is much smaller, and thus the weight of powder being accelerated to some average velocity constitutes a much smaller component of the total recoil.
