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Question Crosman 2250B - Conversion to 177

Discussion in 'Anything Airgun Related' started by datadave, May 1, 2012.

  1. datadave

    datadave Engaging Member

    Messages:
    228
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    Location:
    Atherstone, Warwickshire.
    :) Hi everybody. I've been giving a lot of thought lately to converting a Crosman Ratcatcher to 177. Has anyone attempted this? If so, what's involved?

    One of the problems would be power - which would be affected by barrel length, amongst other things. I wonder what is the optimum barrel length? I seem to remember that one well-known postal dealer supplied 177 barrels - up to a maximum of 24" - but I could have dreamed it!

    Would it be better to do the conversion using a Crosman 'long' steel bolt and breech kit rather than the standard plastic assemly?

    Thoughts and comments would be most welcome!

    Cheers - datadave
     
  2. andyz1000

    andyz1000 Banned

    Messages:
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    Location:
    pembrey burry port
    i have done it
    all thats needed is a 1377 steel breech with extended probe from gmac and a .177 barrel also from gmac
    i went for an 18" barrel
    its not as powerful as a .22 ratty though
    for example my .22 ratty puts out 490 fps with superdomes(14.3g) which is 7.6 fpe the .177 puts out 600 fps again with superdomes(8.3g) which is 6.6fpe
    no internal mods have been done to either ratty,power can be easily upped but then you sacrifice shot count per co2 caplet,i prefer more shots per co2 over power as i only use them for plinking
     
    Last edited: May 1, 2012
  3. jolo-bolo

    jolo-bolo Donator

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    Location:
    Billericay
    Gmac custom parts sell barrels up to that length so does T R Robb but if you did it by post you have to send your old one first to exchange VCR act come into play
     
  4. datadave

    datadave Engaging Member

    Messages:
    228
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    1
    Location:
    Atherstone, Warwickshire.
    Thanks for your responses, guys. From what you've said, there's not that much to be gained from fitting a 177 barrel. I had in mind using it for plinking and hunting - mainly opportunistic - rats and crows etc. Perhaps the best course of action is to tune the power on a 22, rather than go to the expense of the change to 177.

    Cheers everybody - datadave.
     
  5. datadave

    datadave Engaging Member

    Messages:
    228
    Likes Received:
    1
    Location:
    Atherstone, Warwickshire.
    :eek: Seeing that there seems to be quite a penalty to be paid in terms of power in fitting a 177 barrel to the 2250B I've been wondering whether the 'compromise' calibre - .20 - might be a solution?

    Has anyone gone down this route? I wouldn't have thought that the cost of obtaining/modifying a .20 barrel blank etc would be any more than a 22?

    Experiences, comments would be welcome, Peeps

    Cheers - datadave
     

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