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Thread: Cast bullet diameter for Miroku built 1885

  1. 10-25-2023, 04:34 PM #1
    colt45sa
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    Cast bullet diameter for Miroku built 1885

    I've read in a couple of place that Miroku bore size on the .38-55 is .377. Have any of you "slugged" your barrel to verify this. If that diameter is correct, are you using .379 lead bullets?
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  2. 10-25-2023, 06:33 PM #2
    Polymath
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    I cast for the 44-40 WCF. Came across a Miroku lever gun that would not chamber the cartridge until I sized the bullet down to fit.
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  3. 10-25-2023, 06:41 PM #3
    Fitz
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    mine is .381 in the throat I would guess the bore is .377 , I paper patch my bullets to fit the throat at .381 for a tight fit with finger pressure , accuracy is excellent out to 200 yard.
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  4. 10-26-2023, 01:10 PM #4
    gnoahhh
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    Do yourself a favor and perform a chamber casting to include throat and a bit of the bore. That'll tell you all you need to know about bullet fit for your gun. It's not rocket science, and I plain don't understand why guys are afraid to do it!
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  5. 10-26-2023, 10:49 PM #5
    Cast10
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    My new 1894 Miroku/Winchester Sporter in 38-55 slugged .375, as Winchester told me.
    I size to .376 (powder coat).
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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check