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Bsa Ultra Se - Bolt Leaver Problem

Discussion in 'Anything Airgun Related' started by mitov08, Nov 4, 2018.

  1. mitov08

    mitov08 Well-Known Member

    Likes Received:
    Hello All,

    I have a BSA ultra se, was an amazing gun honestly but recently its driving me up the wall.... Took her down the range and was shooting until the bolt seemed to jam on the loaded position. Took her home stripped down, gave it a clean all fine!

    Next day comes I am back down the range, fired about 10-15 clips (happy days). The grouping went utter S***... I thought this was extremely off as I was putting the same exact pellets through. To add salt to the wound the bolt jammed up AGAIN.

    Completed another strip down looked to see what could be the problem: Nothing out of the oridinary, hell I applied a little bit of bsa grease to the ball that locks the bolt to potentially allow it smoother transition. Played around with it to test if this fixed the problem, you guessed it> Did not...

    Now I have reached the point where I am ready to throw it out the window and just save up for a brand new rifle as this was a second hand.
  2. SteveO

    SteveO Top Poster

    Likes Received:
    Is the probe seal jammed in the magazine stopping it being pulled back? - most common fault, and have you got any bits of pellets jammed in the magazine aperture?

    Other thing it will likely be is the cocking bolt banjo has come loose on the probe and moved out of place - a common fault, if the hex bolt comes loose or you have forced the bolt, if that's the case the gun will need stripping to re-adjust and fix it.

    Whatever you do don't go trying to force the bolt back and forth, it could cause a lot of damage in the housing, especially if it's grinding while you do so.

    PS. is the probe bent? remove it and roll it on a piece of glass to find out.

    Can you explain the extent to which you have stripped the gun? had the two halves apart?
    mr-mswindon likes this.
  3. mitov08

    mitov08 Well-Known Member

    Likes Received:
    Sorry for not replying sooner, I think I may have came to the root of the problem. I stripped the bolt, bolt chamber etc. Out of the gun. I checked the entire interior of the gun to see if anything would suggest on what actually caused the bolt to lock in place.

    The gun did not appear to have ever been stripped which I found very weird, however I found the spring for the ball extremely odd (the one that locks the bolt into the firing position and prevents it from loosening).

    Upon a quick googling of the part I quickly realised that the spring that I had was extremely "springey" since it left scratch markings on the buddy tank, I decided to cut half of it off & order a new spring in to see if that was the problem. The moment I resembled the gun & gave the bolt a even coating of grease (BSA approved) it has loosened up a bit too much...

    Once the replacement spring arrives will give that a go, if that is still too stiff will just stretch out the one I cut in half to provide a bit more pressure.

    I can provide you a video of what the system is like now :)

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