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Thread: 450 Bushmaster - more info

  1. #21
    Happy Camper hcpookie's Avatar
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    Roger that. I don't know how to compute case capacity. Is there a formula of some sort? It is less than simple volume because you have to account for the webbing at the base. Is there a software program that does this?


    Check this out - I was digging through my brass and realized I had some 300 Remington Ultra Magnum brass. This stuff is HUGE! I looked it up, and the exact measurements are .550 at the base, .534" rim, and 2.8" OAL with a .525" shoulder.

    http://stevespages.com/jpg/cd300remingtonultramag.jpg

    Now *THAT* would be a huge powder load for a .450, .44, or .50 sized Intermediates.
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  2. #22
    No Hope For Me 1biggun's Avatar
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    HC do you have a link to the home page of the site were you are getting all these nice pics of cartidge specs?????

    that 300 rem mag might make a very nice .50x1.5 type round indeed. Hard part would be the large bolt face. maybe you could some how use a bolt and carrier from your 45-70 build? the rim of a 410 SG is .536 perhaps a siaga bolt could be used or possablly it could be rebated. Think it might be getting into the to much for a AK area again though.

  3. #23
    Happy Camper hcpookie's Avatar
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    Those are from Steve's Pages. Not sure how accurate they are, I'd have to cross-check them in my reloading manuals.

    page8d


    You are thinking *exactly* what I was! The PSL bolt face can be expanded out and VOILA! you have a bolt for the .50/RUM hybrid.

    I about fell over when I saw the prices of a .50 cal barrel blank on Midway - $400!!!!!

    Someone PLEASE tell me there is a cheaper .50 cal barrel somewhere?!?
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    The "original" Boltcutter Rivet Squeezers:
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  4. #24

  5. #25
    No Hope For Me 1biggun's Avatar
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    I see they have 5.45 russian blanks as well (.222)

  6. #26
    Happy Camper hcpookie's Avatar
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    You know I still think a .22 LR barrel could be used for 5.45. I haven't slugged the barrels but the specs are *VERY* interesting to compare.
    Gunco Member #10

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  7. #27
    tired of idiots vz58's Avatar
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    WHOA!!
    Hcpookie, I have to disagree with you on the 22lr being used for 5.45.

    Dimensionally it may be close BUT often 22lr barrels are made of different/softer metals. I will try to find a spec sheet I have somewhere around here but it was different from the 4140 treated on the centerfire rounds.

    May be a barrel maker could chime in here.

  8. #28
    Happy Camper hcpookie's Avatar
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    I didn't know that about .22 barrels. HRM.
    Gunco Member #10

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    The "original" Boltcutter Rivet Squeezers:
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    Project Pink - the Pink and Blue AK-74:
    http://pookieweb.net/pink/pink.htm

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