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Thread: Lothar Walther ready to go for the AR/QBD

  1. #1
    Senior Member SeanMP's Avatar
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    Lothar Walther ready to go for the AR/QBD

    Well there has been some grumblings about it being too quiet around here so I'll post up what I've been working for the last few days.

    One of Eric's Lother Walther barrels machined for the 15mm AR/QBd configuration

    I was waiting on bluing compound to complete the job. The bluing on this barrel is Slow Rust Blue. I think it turned out smashing

    DSCF0170.jpg

    Overall barrel showing the deep black of the rust blue process. This one shows warm tones in the right light which apparently is a sign of a fully developed rust blue treatment.

    DSCF0172.jpg

    View showing breach end. I tightened the tolerance over factory to minimize the wiggle these guns have in this area. Not by much though, a mere 0.003".

    DSCF0171.jpg

    View showing stepped target crown. It still needs the final pass with a brass crown tool

    I can't wait for the opportunity to whistle a bunch of different pellets downrange...stay tuned
    Sean

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    Moderator rsterne's Avatar
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    Beautiful job, Sean.... I hope to be not too far behind you.... I have a 15mm OD LW blank in .25 cal sitting here now....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal:
    .177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 22XX PCP 8-shot Carbine, 2260 PCP Rifle (50 FPE), Hayabusa PCP, .22 B-26, DAQ .308 Exile

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    Member Dukemeister's Avatar
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    Very nice looking. Where do you get slow rust blue?
    Member, Limestone Beekeepers Guild
    Duke ))))----//----------==

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    Senior Member SeanMP's Avatar
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    Sean

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    Member just missed's Avatar
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    Barrel looks great, just sent my request off to Eric. Can't wait.

  6. #6
    Member just missed's Avatar
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    Could a QB78D be converted to a .25 by just swapping out the barrel and probe?

    John

  7. #7
    Senior Member SeanMP's Avatar
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    Ya certainly

    There would be the normal fiddling around to dial in the required velocity that is normal when changing calibers
    Sean

  8. #8
    Moderator rsterne's Avatar
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    My intention is just to machine off the forward part of the bolt, drill and tap it, and make a larger front section carrying a larger O-ring and pellet probe....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal:
    .177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 22XX PCP 8-shot Carbine, 2260 PCP Rifle (50 FPE), Hayabusa PCP, .22 B-26, DAQ .308 Exile

  9. #9
    Member Dukemeister's Avatar
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    Quote Originally Posted by rsterne View Post
    My intention is just to machine off the forward part of the bolt, drill and tap it, and make a larger front section carrying a larger O-ring and pellet probe....

    Bob
    Would you post a pictorial of how to do the probe, please Bob?
    Member, Limestone Beekeepers Guild
    Duke ))))----//----------==

  10. #10
    Moderator rsterne's Avatar
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    Will do when I machine the bolt....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal:
    .177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 22XX PCP 8-shot Carbine, 2260 PCP Rifle (50 FPE), Hayabusa PCP, .22 B-26, DAQ .308 Exile

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