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Thread: Quietness - .177 vs .22?

  1. #1
    Boolit Buddy
    Triggernosis's Avatar
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    Quietness - .177 vs .22?

    Assuming the same PCP rifle in the different calibers (Benjamin Fortitude, specifically), which would be the quietest - 177 or 22?

  2. #2
    Boolit Master chutesnreloads's Avatar
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    I'd be surprised if the .22 was louder than the .177. Having said that.... if it's an issue, then scale down the power level

  3. #3
    Boolit Master

    sparky45's Avatar
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    I agree with chutes. Also, Donny FL could definitely solve any loudness problem.

  4. #4
    Boolit Master
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    You really should look at a "shroud" of some sort. Even powerful 25 PCP guns can be very quiet.
    "If everyone is thinking the same thing it means someone is not thinking"

    "A rat became the unit of currency"

  5. #5
    Boolit Man
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    These things determine noise level (assuming no noise mitigating device in place):
    1. the power, as in foot-pounds of energy being produced by the airgun
    2. The velocity of the projectile, to the degree that it passes speed of sound and produces a "crack". Diabolo pellets typically perform the best under about 920fps.
    3. The efficiency of the airgun. Inefficient PCPs will have more of a bark to their shots.

    These three things are more pertinent to the discussion of noise level than the caliber.

  6. #6
    Boolit Buddy
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    IMHO the .177 is more likely to break the sound barrier than the .22. In addition, the heavier pellet might have advantages depending on what you are doing.

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BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
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LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check