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Thread: .458" cast bullets

  1. #1
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    .458" cast bullets

    Wheres the best place to get .458" cast bullets in 405 and 350 grain weights for use in a 45/70 Marlin.??
    Tim

  2. #2
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  3. #3
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    First slug your barrel to find the groove diameter. Cast bullets have to be at groove diameter or larger. Unfortunately Marlins, I've slugged over a dozen, seem to be made on the large side. This is why Marlin microgroove barrels got a bad rap for use with cast bullets. My .45-70 marlin was. 4592", obviously. 458" bullets were a disappointment. Instead I made a mould that cast out at. 461" and sized to. 460" and all was good. A couple of other owners took my advice to use bullets as cast, without sizing, and that worked out well too.

  4. #4
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    Barrel slugged at .457", I normally get .457" or .458" bullets which shoot well but its an 80 mile round trip at 25 mpg in the Disco.
    I have cast my own but I don't get time at the moment plus the Lee mold in 405grn I have is dropping em out small. Tim

  5. #5
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    Quote Originally Posted by loiner1965 View Post
    Many Thanks, order sent. £10.50 delivery is cheeper than fetching them in the Disco.!!

  6. #6
    Join Date
    Dec 2012
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    Quote Originally Posted by andrew375 View Post
    First slug your barrel to find the groove diameter. Cast bullets have to be at groove diameter or larger. Unfortunately Marlins, I've slugged over a dozen, seem to be made on the large side. This is why Marlin microgroove barrels got a bad rap for use with cast bullets. My .45-70 marlin was. 4592", obviously. 458" bullets were a disappointment. Instead I made a mould that cast out at. 461" and sized to. 460" and all was good. A couple of other owners took my advice to use bullets as cast, without sizing, and that worked out well too.
    Certainly true. My micro groove 1894 357 shoots like a shotgun with .357 lead, but like a target gun with 358.
    [I]DesG
    Domani e troppo tardi

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