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Thread: Will Theoben Rapid barrel fit on BSA Ultra?

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  1. #1
    Join Date
    Apr 2015
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    Thanks for the replies gents and sorry for my late reply. I have done some more research. The .25 barrel turned out to be a LW blank; outer diameter is 16mm, and BSA barrels are 15.4. A machinist will modify it to fit my BSA pcps, using a .25 Ultra barrel as an example. The .20 barrel is a Rapid barrel. I will sell it on, as I think it would be a shame to modify it. As you point out. And making a .20 probe and probe guide for my BSA's is possible, but I've spent enough this month on airguns and related items haha. So that's it

  2. #2
    Join Date
    Feb 2006
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    Farnborough
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    Have fun with your .25" project
    WANTED: Next weeks winning lottery numbers :-)

  3. #3
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    Apr 2015
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    Thank you
    It is going well so far.
    I am using a 15.2" .25 Scorpion barrel on the Ultra. With a 250mm cylinder. 10 more or less consistent shots at 20 fpe. Excellent accuracy, I tested up to 60 yards.
    With the 24" barrel, I assume the power and shot count will be higher. There are 325mm and 425mm cylinders on their way. And a huma reg. That goes up to 155 bars, we'll see.
    But I do like .25.
    Best regards, Louis

  4. #4
    Join Date
    Nov 2013
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    Quote Originally Posted by louisvanhovell View Post
    Thank you
    It is going well so far.
    I am using a 15.2" .25 Scorpion barrel on the Ultra. With a 250mm cylinder. 10 more or less consistent shots at 20 fpe. Excellent accuracy, I tested up to 60 yards.
    With the 24" barrel, I assume the power and shot count will be higher. There are 325mm and 425mm cylinders on their way. And a huma reg. That goes up to 155 bars, we'll see.
    But I do like .25.
    Best regards, Louis
    With 24" barrel and 425mm cylinder you could easily reach 60 fpe for around 10 shots if you want. That would be an excellent setup for 100M shooting with JSB Kings or King Heavies
    Viking Mk2 .177/.22 bullpup, BSA Scorpion SE .177, BSA Scorpion .25 100M gun, BSA Scorpion .224 100fpe 100M gun,
    Evanix Blizzard .257/.357 200M BR, Evanix Sniper X2 .45 at 270 fpe

  5. #5
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    Quote Originally Posted by riku View Post
    With 24" barrel and 425mm cylinder you could easily reach 60 fpe for around 10 shots if you want. That would be an excellent setup for 100M shooting with JSB Kings or King Heavies
    Thank you Riku. I see in your signature that you are experienced with powerful BSA's, nice.
    60 fpe would be nice. I think I'll sell my Bobcat then.
    I've just bought a Techstar and Lonestar as well. I feel a bit lucky. And like a bragger. Sorry. It is not intentional. But I have been looking for a long time and then someone has a whole collection of them and is prepared to sell 2... Great
    I need to sell the Bobcat btw, I can hear my bank account crying.

  6. #6
    Join Date
    Nov 2013
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    Quote Originally Posted by louisvanhovell View Post
    Thank you Riku. I see in your signature that you are experienced with powerful BSA's, nice.
    60 fpe would be nice. I think I'll sell my Bobcat then.
    I've just bought a Techstar and Lonestar as well. I feel a bit lucky. And like a bragger. Sorry. It is not intentional. But I have been looking for a long time and then someone has a whole collection of them and is prepared to sell 2... Great
    I need to sell the Bobcat btw, I can hear my bank account crying.
    Just use old style larger diameter firing valve and open up the airpath and you are there. I was able to reach 60 fpe with only 18.5" barrel in my .25, that 24" barrel can do about 50 fps more leaving room for improved shot count.
    Viking Mk2 .177/.22 bullpup, BSA Scorpion SE .177, BSA Scorpion .25 100M gun, BSA Scorpion .224 100fpe 100M gun,
    Evanix Blizzard .257/.357 200M BR, Evanix Sniper X2 .45 at 270 fpe

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