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Thread: Benjamin 397P Phase 1

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  1. #1
    Join Date
    Feb 2009
    Location
    Oxford
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    1,656



    I spent some time trying to improve the bad EB20 trigger by smoothing out rough spots, greasing, shimming and adding a trigger shoe. The trigger shoe is a really nice addition, which I got about 10 years ago from SD custom designs, Steve Darrel? The trigger is still bad but feels nicer to shoot.
    I shot it over the chrono it was quite cold this morning but still produced 5fpe. I'll add a hammer spring guide and check the power. The .22 version must sit very close to the limit.

  2. #2
    Join Date
    Dec 2016
    Location
    leeds
    Posts
    2,069
    you can weaken the sear spring ot replace the torsion spring wit a compression spring like the crosman

  3. #3
    Join Date
    Feb 2009
    Location
    Oxford
    Posts
    1,656
    Quote Originally Posted by --ped-- View Post
    you can weaken the sear spring ot replace the torsion spring wit a compression spring like the crosman
    Thanks Ped, is the torsion to coil spring an easy swap?

  4. #4
    Join Date
    Dec 2016
    Location
    leeds
    Posts
    2,069
    you need to drill and tap the frame down from the top so a seat can be screwed into the frame to take the spring
    it's not hard to do

  5. #5
    Join Date
    Feb 2009
    Location
    Oxford
    Posts
    1,656

    Thumbs up

    Yes I see what you mean.

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