Wanting to modify my discovery. 22

Forums PCP Airguns Wanting to modify my discovery. 22

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    Gregl985
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    Would like to try and make this gun a sweet shooter, but have no clue where or what to start on first. Its bone stock other than a tko muzzle break.  Any suggestions are welcome 

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    thammer
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    Get a Lane or Huma regulator,  gauge block from the Benjamin P-rod, upgraded high tensile valve retaining screws from Magnum Air allowing for a 3000psi fill and then you can bore out the cap for the rear tube plug/ spring retainer.  Add a slightly stronger spring that's not under preload when not cocked. This will act as a anti hammer bounce device. You can also look for upgraded trigger kits.  Not sure who all is making them now.  Clean,  maybe polish the barrel bore and you should have a nice, powerful and light target/ hunting rig. 

    • This reply was modified 3 days ago by thammer.
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    Pruitt58
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    Did you already do the 3 screwed trigger modifications and polish the trigger parts where they touch? opened the ports to about .170. l

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    SilentSquirrel
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    thammer

    Get a Lane or Huma regulator,  gauge block from the Benjamin P-rod, upgraded high tensile valve retaining screws from Magnum Air allowing for a 3000psi fill and then you can bore out the cap for the rear tube plug/ spring retainer.  Add a slightly stronger spring that's not under preload when not cocked. This will act as a anti hammer bounce device. You can also look for upgraded trigger kits.  Not sure who all is making them now.  Clean,  maybe polish the barrel bore and you should have a nice, powerful and light target/ hunting rig. 

    Is the OEM spring under preload?

    Is the same true for the Maximus?

    Thoughts on going with a Maximus barrel, also please

    Tanks

    Ed

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    Pruitt58
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    Baker air gun has the trigger kits for the discovery and the Maximus and the maximus barrels are amazing.

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    Gregl985
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    I have the back plug to adjust the hammer, I ordered a degasser waiting for it to come in. I will find all the extra things yall suggest online and order too. Thanks for the input, this will get interesting quick lol

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    boscoebrea
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      I also have a stock Discovery,it is accurate enough,butt has a crappie trigger that needs to go,get a better trigger,the other thing, it is a air hug,I get about 26 shots max on a fill,I would look into doing something to get more shots…..without spending much money.

     

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    Pruitt58
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    I think last time I used 3 discovery valve O rings up against the back of the Valve.it is called a bstaley mod. I just set my 22 marauder up and I am getting 50 good shots on a fill!!!

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    biohazardman
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    A lot of good info here. You can treat the gun much like the 22xx guns as far as valve mods go so a slightly larger t-port and angle the valve port will get you a bit more power.  If you don't go overboard you will not get less shots just a little more fpe.  The slightly shorter slightly stronger hammer spring is a great mod for sure and one I always use.  The hammer spring adjuster is a good mod for help when tuning. Here is a link that may help you with some of this.

    https://www.airgunnation.com/topic/crosman-maximus-cal-177-tuning/

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    Gregl985
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    I guess once I take the gun apart Ill know a little bit more about the parts ya'll are talking about. I'm sure i'll have a lot more questions ,lol

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