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Blocking barrel ports

Discussion in 'Shotguns' started by statman92, Mar 18, 2014.

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  1. statman92

    statman92 Member

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    I recently bought a Mossberg 500 special hunter, and because of the 20 ports on the barrel and the ill fit of the stock to me, it gives me a significant upper cut when I fire it ... like swollen face kind of upper cut. Rather than have the stock altered to fit me (which would cost more the gun), I was thinking of changing the barrel to one with no ports or blocking the ports on the existing barrel. The problem with the former is I can't find one available (thanks Obama), and turkey season is coming soon. SO, I was wondering if anyone has tried blocking the ports and if-so how?

    This might be a stupid idea, but I was thinking of putting a pipe clamp over them just for the turkey hunt. Anyone tried that?
     
  2. rcmodel

    rcmodel Member in memoriam

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    If it kicks that hard with the ports?

    It will kick harder without the ports.

    The ports are there to supposedly reduce recoil somewhat.

    But a pipe clamp on the muzzle?

    Well, it would add weight in the right place to help hold the muzzle down!

    rc
     
  3. statman92

    statman92 Member

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    The ports are on the top of the barrel so it pushes it down, rather violently, which makes the butt go up, equally violently. The shove to the rear doesn't bother me on shotguns, but that upper cut ... haven't been hit that hard since I boxed heavyweight. I have heard this isn't that uncommon with a stock that fits someone really badly, and that building up the stock will cure it. But, that would likely cost more than the gun (it was cheap).
     
  4. rcmodel

    rcmodel Member in memoriam

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  5. statman92

    statman92 Member

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    Well, my question was about the experience people have had with blocking ports, not about physics. Have a nice day.
     
  6. Russian Hammer

    Russian Hammer Member

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    Yes you can block the ports, some muzzle brakes even have a built in piece allowing you to do so, that said I think rcmodel is trying to keep you from wasting time and money. Ported shotgun barrels are generally only marginally effective, and if you have found one that is so effective it pushes the gun down to the degree you claim, post a video showing it and I'll buy the barrel from you for a nice chunk of cash.
     
  7. JSH1

    JSH1 Member

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    There are 130 Mossberg 500 barrels on Ebay right now.
     
  8. oneounceload

    oneounceload member

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    It would be easier to buy a barrel without ports. Your ill-fitting stock is the culprit, not the ports, as there is not enough pressure generated in a shotgun for porting to do much, if anything. Getting the stock properly fitted is the correct way to go.
     
  9. PBR Streetgang

    PBR Streetgang Member

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    Mossberg 500 barrels and different size stocks are available for a relatively inexpensive price. Do you need a longer or shorter stock?
     
  10. jaguarxk120

    jaguarxk120 Member

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    The ports are there mainly for looks and do nothing to reduce recoil.

    Just buy a barrel off of ebay as others have suggested. If you sell the gun you can keep the extra barrel and sell it or put it on another 500.
     
  11. ugaarguy

    ugaarguy Moderator Staff Member

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    Statman, there is no cost effective way to block the ports on a shotgun bbl. The most cost effective solution is to buy a bbl that isn't ported, and sell the ported bbl.
     
  12. 19-3Ben

    19-3Ben Member

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    Instead of buying a new barrel, since the porting probably isn't the issue here, but you mentioned several times that the stock doesn't fit you well.
    Seems to me that getting a new stock may be in order. Forget having the current stock modified, as that costs a ton of money, as you mentioned. But replacement stocks, and even adjustable LOP stocks can be had for $75 or less. I'd try to find a stock that fits better. If you're getting that much movement in recoil, the stock may not be properly braced against your shoulder. A stock that adjusts to your desired LOP may fix that.
    I might also add that a pistol grip stock may help, as it gives your shooting hand something to really grab onto and another point to absorb recoil.

    Edit do add:

    Perhaps something like this. Might be worth the $40 for the experiment.
     
  13. oneounceload

    oneounceload member

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    Getting an adjustable stock when the problem has yet to be determined can also wind up being a waste of money. One needs to know what is wrong before one can attempt to correct it. There is a LOT more to stock fit than using an adjustable LOP. Cast, drop at heel and drop at comb (what sounds like might be the culprits), toe in or out, pitch, type of grip, etc. all play into having a shotgun fit. The gun should fit YOU; you should not fit yourself to the gun.
     
  14. Sam Cade

    Sam Cade Member

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    In all seriousness, duct tape.
    [​IMG]

    Wrap the ports with a towel and tightly cover with duct tape.

    Shoot it a few times with the ports occluded thusly and tell us what the net result was.
     
  15. oneounceload

    oneounceload member

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    Besides a messy towel?
     
  16. wally247

    wally247 Member

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    Yes you'll have a messy towel, but you'll either solve the problem or eliminate a variable.
     
  17. oneounceload

    oneounceload member

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    That won't solve a problem; even duct tape applied directly will get blown off; the holes would need to be filled typically by some form of welding or similar and that would destroy the heat treatment of the barrel. It still does not address his ill-fitting stock
     
  18. WestKentucky

    WestKentucky Member

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    Or sell the gun and buy one that fits. Seems that there is already bad blood towards the gun for some reason. Walmart sells shotguns pretty cheap. Sell one, buy another. For what you would pay for a barrel or a stock you could sell your gun, add the cash you would use to make you happy with this one and buy a brand new one. Mossberg maverick88 is cheap but it's still a 500. Rem870 isn't much more. Stevens, NEF, and other 12 ga pumps can be had for less. I'm not sure why were even talking about fancy stocks and new barrels.
     
  19. jakk280rem

    jakk280rem Member

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    I think Sam was just trying to get the OP to spend as little money as possible to learn a lesson in common sense and physics. He wasn't actually offering up a towel and duct tape as a fix for the guys problem.
     
  20. JSH1

    JSH1 Member

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    Covering the ports would prove that they aren't the problem. I would recommend a thin layer of metal like a soda can as the first layer and then cover with duct tape.

    I suspect the OP is long gone. He signed off in post #5 and made it clear that he isn't interested in learning what is causing his problem
     
  21. Virginian

    Virginian Member

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    Metalized duct tape will work to cover the ports. A buddy used some to cover the ports on his Gold Sporting just to see if there was any noticeable effect and it worked for 100 rounds anyway. He did cover it with one wrap of black electrical tape so the color of the duct tape didn't mess him up. The pressure out there is pretty darned low.
     
  22. eastbank

    eastbank Member

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    when the 94 AE winchester timber carbine first came out i bought one, thinking it would be a perfect heavy brush rifle with a short barrel(18") with ports in 444 marlin. i have shot the rifle exactly 15 times, 14 shots to sight it in and get use to the kick with good ear protection on and one shot to kill a six point buck. my ears were ringing all afternoon and it has been setting in my gun room ever since and i would have gotten rid of it but it has gone up in price, so i keep it. eastbank.
     
  23. Sam Cade

    Sam Cade Member

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    Exactly.



    Boyle's law is a real joykiller sometimes. ;)
     
  24. rcmodel

    rcmodel Member in memoriam

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    Well, I once had a finger right next to a port on my 16" Marlin .44 Mag Guide-Gun while shooting out my truck window.

    You only want to do that once I'm here to tell ya!

    Of course .44 Mag muzzle pressure is much higher then 12ga shotgun muzzle pressure.

    But there is something coming out of those shotgun ports, doing something, or they wouldn't waste money drilling them in $10,000 Perazzi Trap guns.

    rc
     
    Last edited: Mar 19, 2014
  25. Sam Cade

    Sam Cade Member

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    About three times the chamber pressure of a 12 gauge.

    Remember that pressure in the bore increases exponentially
    as barrel length decreases.

    A long barreled shotgun just doesn't have much huff to work with.


    They do look cool.

    I had the opportunity to shoot two DT10s last year that were twins other than one being ported.
    I could not for the life of me tell any difference between the two.
     
    Last edited: Mar 20, 2014
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