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Thread: Length vs Diameter

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    Length vs Diameter

    Given identical volume, is a long, slender can or a short, fat one more efficient?

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    Quote Originally Posted by sniperdoc View Post
    Given identical volume, is a long, slender can or a short, fat one more efficient?
    Here's my limited experience, for what it's worth:

    -all else being equal, volume in front of the muzzle is king and the farther in front the more valuable it is, so for a set barrel length and an equal volume, long and slender is more efficient than short and fat, but adds to over all length.

    -this is also the reason while volume behind the muzzle as in telescoping designs helps a tiny bit, it really adds very little. The whole event is over so quickly that in tests those spaces never really seem to get any significant gas volume.

    -having blathered all of that, I much prefer short and fat for the given OAL I want for the application. To me added length can make a gun unwieldly whereas added girth is more easily ignored. Each extra inch of barrel can have a big effect on muzzle pressure, so if I have total design freedom (like building my own mac or AR upper) I'd prefer say, 16"of barrel + 6" of a fat can over 14" of barrel + a 8" skinny can. A short fat can may be slightly less efficient but if it buys another 2" of barrel length the overall package may be quieter is what I'm trying to say.

    Just my 2 cents and broad generalizations. I'd love to hear what others think on this.
    Last edited by Rob1928; 01-28-2021 at 11:34 AM.

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    According to Jake, longer generally equals better
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    Sniper, which suppressors do you own? How do they sound?

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    Where's Dr. Dater when you need him??
    Dover's the name, Ben Dover.

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    I'll second what Rob1928 says. A while back, I was into Form 1 suppressors, hanging out on the forums, all that. Consensus from guys who tinkered around with it was Length yielded better results, Reflex was "meh", better than nothing, but not amazing. I do wonder about the old Scionics 2-stage. That seems, in my unprofessional opinion, to be the best of both worlds. Oversized blast chamber, then long-skinny baffle stack.

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    Quote Originally Posted by Gaffshot View Post
    Sniper, which suppressors do you own? How do they sound?
    I don't own any cans, hoping to get or F1one soon. I've shot more than a few suppressed guns, almost all belonging to Uncle Sam
    Last edited by sniperdoc; 01-28-2021 at 07:20 PM.

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    A thread titled "Length vs Diameter" and not a single double entendre?!

    You guys are slipping... or I mean I'm proud of the board's maturity....or something.

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    .... Got a few..... The old school SWD....by far my favorite.

    Simple as my mind is.....Longer and fatest would be the best.

    Long and skinny ....theres gonna be a point where it makes no sense to be any skinyer or longer

    A local friend made some shorty Fat 308 cans that werk great.....I didn't get one and they were a limited run. They were/ are nice and light...Like 4.5" long and 2.5" dia.
    And Did Not resemble a Impact Socket for a Semi Truck lug Nut...in size or weight like my new can.

    My current "new" can in 308 ...yet untested....Is like a Brick.
    I'm sure its indeStructable but at a cost......Very heavy...its of the longer skinny type profile.

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    Quote Originally Posted by Rob1928 View Post
    A thread titled "Length vs Diameter" and not a single double entendre?!

    You guys are slipping... or I mean I'm proud of the board's maturity....or something.
    I figured there would be at least a few jokes about it when I wrote it, too

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    I'm looking to either buy or build (build would be much more fun!) within 4 months, a 9mm can, 1/228 threads with a 3/4 adapter, eventually adding a Neilson Device for pistols.

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    Quote Originally Posted by sniperdoc View Post
    I figured there would be at least a few jokes about it when I wrote it, too
    Guess you guys need to reread my reply. Perhaps I was to subtle
    Chris Hipes
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    Quote Originally Posted by chili17 View Post
    Guess you guys need to reread my reply. Perhaps I was to subtle
    I didn't get the "Jake" reference

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    I thought you were being rather supple..
    Dover's the name, Ben Dover.

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