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Discussion Starter · #1 ·
I came across an older 1100 Remington that has a screw running transverse through the gas cylinder on the 28" barrel. In removal, it appears to be a system to vary the gas flow through the gas orifices(2). I would say from looking at it that one could remove and install one of a series of these screws that would have a larger or smaller shank in the port area to cause a reduction or increase in the gas flow. Does anyone have any information or history on this setup?
Thanks
 

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I've seen the same setup before. don't think it was factory work however, never seen anyone else mention it. Not really necessary unless you are going from 2 3/4" mini-mags for hunting to 7/8oz target loads, as long as your staying in the range of what would be considered a target load, the 1100 should function fine, it may need a little tweaking to function on the low end, but it would still work for 1 1/8oz shells.
 

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pipestone...take a photo of it if you can..I've seen something similar but never saw it in action.

Big Jack
 

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Pipestone; A very close friend of mine shot at the Royal Hong Kong Skeet Club for many years and has the same barrel. He told me it was acquired there and was something that Remington did on export barrels due to the quality of shells in foreign countrys. He was based there in the early Sixties with US Embassy. Doubtful that the club still exists under the Communist regime. Beats oversizing holes.
 

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in 74 i had a 1100 3 inch mag and that came with one vent port. I drilled and tapped a 2-56 threaded second port to shoot light trap loads. Then put a set screw in it to shoot 3in mags.
 

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Discussion Starter · #6 ·
Just a follow up. I had a chat with the owner and found that there is not one but two 1100s with this setup at the club. Seems the guns were sold as a two barrel gun, one being the modified choke 28" barrel with the screw in the gas cylinder and a full choke 30" barrel with no such device. The screw is designed to be threaded in or out to open or close off the gas ports to allow a greater variety of loads to be used. There is also a screw on the opposite side of the gas cylinder that is used to lock this adjusting screw in place once the desired setting for the gas ports is achieved. On the weekend I will have a chance to remove the screw and will take a photo that I will post on the thread. I will have a little more history at that time and will pass it on.
 

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The SKB series of XL300 and XL900 gas guns that were imported by Ithaca years back used something similar as they had two gas ports and used a switchable little "valve" that covered/uncovered a second port. It was accessed by removing the forearm. It was labeled something like "L" and "H" for light and heavy loads and you could use a dime to just rotate it to the other position.

I bought one new for my wife to shoot skeet with about 1973. It worked pretty well.
 

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I have an old Remington model 58 that has a gas adjustment on the magazine end cap. I guess all the 58's did? Never seen an 1100 with a gas adjustment device.
Sounds like a good idea though. Colonel
 
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