Suppressed Disco issues

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Lee

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May 1, 2016
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I threaded the factory aluminum piece that holds the front sight on my .177 Disco turning it into a 12-28 adapter for for my .22 suppressor. The .177 disco is rather darn loud but with the suppressor it is stupid quiet which made me excited until i went to sight it in. It was impossible to sight it in. I took the suppressor off and the disco goes back to being accurate again so i know it is the suppressor causing the problem. With the the suppressor on it I cant get anything repeatable to come from it to even begin to adjust for a point of impact shift that I would expect. The suppressor is a Huntertown Arms Kestrel .22 that is all stainless so it is rather heavy for a .22 suppressor. I was thinking that might be the problem. The gun is stock with no upgrades. Maybe the barrel band and the heavy suppressor are working together to throw things so far out of wack?

Does anyone here have anything they can share on this topic? I know that in other countries they manufacture and sell airgun suppressors over the counter but i assume they are very light weight aluminum and airgun specific. I looked for pics and cant find many of people just throwing their real cans on their airguns, I just saw shrouds.

I just want to know if anyone here uses their rim fire cans on their PCP guns and what their experiences have been with them.
 
The pellets might be striking the device on passthrough. (BTW,"suppressed is a delicate term on airgun forums, the admin may advise you toward a euphemism like LDC.)

You might try rotating the LDC a bit to see if you get better barrel alignment. You might also be able to enlarge its passthrough slightly with a drill without compromising its positive effects.
 
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I disassembled it and took a closer look than i did before. At first i thought they were not striking the baffles but i was wrong. With a magnifying glass i can see that some are hitting the last baffle and the end cap. Unfortunately i cant justify drilling it out just to use on an air rifle because after its original cost and my tax stamp it is like $550 so it will have to go back on a powder driven rifle i guess. Was thinking about ordering some heavier pellets with less of a skirt to see if they are less effected by entering the LDC environment. My thread adapter might not be concentric though and i still will be out of luck.

Was yours not concentric or were the pellets striking because they were destabilized due to the LDC?

 
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Lee - pretty much everybody I've run into on these forums are shooting airgun specific devices so as not to run afoul of the master powers. Plus, they are considerably cheaper at 50-130 bucks a pop, depending on who makes it. (Well known makers are TKO, Neil Clague and Rocker1 on a different A/G forum, in no particular order). If what you're using doesn't work, it may benefit you to investigate one of those options.

At this point I'm going to bow out of this conversation, and wish you the best with your progress.
 
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Yeah the muzzle weight is defiantly not a precision part for sure. Without the screws in it has a little play so when i screw it down it has to be moving it enough to cause the issues. Oh well i will just scratch the idea. Just sucks because it is so silly quiet with it on. Might be a reason to buy another airgun with a heavier barrel to have threaded.
 
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This is why it is so important to make these to very close tolerances with the barrels, if they are at all loose you might as well throw the pellets at the target. The factory part does not really do much at all for the report of the gun, it is more for looks. The Disco is a very easy gun to get quiet, any maker should be able to get it very quiet for you, Neil.
 
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