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Thread: 7gr wadcutters too light for a springer?

  1. #1
    Join Date
    May 2023
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    7gr wadcutters too light for a springer?

    Have any of you experienced any negative effects from long term use of light pellets in a .177?

    Bisley practice are giving an average of 761 FPS / 10.6 FPE

    RWS Geco are giving an average of 830 FPS / 10.7 FPE

    Theyíre both cheap and accurate out of my BSA Supersport and Iím liking the fast lock time of the Geco but Iím a bit paranoid about knackering the gun with too light of a pellet.

    It is worth noting that a few coils have been taken off the spring, the transfer port opened up to 3mm as I recall and a washer fitted behind the spring. JSB RS now give an average FPE of 11.4 with a maximum of 11.7

    Am I over thinking it and should I keep feeding it Gecoís or would Bisleys be the healthier option for the spring/internals etc..

  2. #2
    Join Date
    Apr 2006
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    Maylandsea Chelmsford Essex
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    How does the gun feel on fireing the light weight pellets?.
    You say it’s nice and quick,but if there is no slamming going on,I would say it’s ok.
    Les..
    Ps
    I would say useing a over heavy pellet 10.5 grain or more would possibly cause more damage (broken main spring) than using a light weight pellet.

  3. #3
    Join Date
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    I would say you'll be okay. Much depends on the internal set-up. It's not just the weight per se (although it's a factor), but the release pressure for each pellet. If it doesn't feel harsh to you in any way, I'd carry on.....
    THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
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  4. #4
    Join Date
    Apr 2002
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    Near Wimbledon, SW London, or Lusaka, Zambia
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    agree with Tone, they'll be fine... unless you have a huge transfer port that'll be causing the piston to slam. 3mm is perfect, or even on the small side, so carry on and enjoy
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

  5. #5
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    i used them with no issues

  6. #6
    Join Date
    May 2023
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    Wolverhampton
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    Shot cycle

    Quote Originally Posted by les allam View Post
    How does the gun feel on fireing the light weight pellets?.
    You say itís nice and quick,but if there is no slamming going on,I would say itís ok.
    Les..
    Ps
    I would say useing a over heavy pellet 10.5 grain or more would possibly cause more damage (broken main spring) than using a light weight pellet.
    It doesnít feel as though thereís any slamming going on, definitely a quicker shot cycle but no nasty noises or anything.

  7. #7
    Join Date
    May 2023
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    Wolverhampton
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    69

    Springer

    Quote Originally Posted by TonyL View Post
    I would say you'll be okay. Much depends on the internal set-up. It's not just the weight per se (although it's a factor), but the release pressure for each pellet. If it doesn't feel harsh to you in any way, I'd carry on.....
    Consider me reassured in that case

  8. #8
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    May 2023
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    69

    Transfer port

    Quote Originally Posted by Shed tuner View Post
    agree with Tone, they'll be fine... unless you have a huge transfer port that'll be causing the piston to slam. 3mm is perfect, or even on the small side, so carry on and enjoy
    Will do, Iím sure it was 2mm maximum before having it sorted. Initially it put the power up too much but after shortening the spring itís settled down nicely. Although itís a budget gun Iím very pleased with how it shoots so donít want to have to get it messed with for as long as I can really.

    Might order me some more Gecoís..

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