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Thread: Cast Boolits in a Polygonal Rifle Barrel

  1. #1
    Boolit Buddy
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    Cast Boolits in a Polygonal Rifle Barrel

    I got to test my rifle with polygonal rifling again today. The first time out I had not put any Locktite on the base screws and they came loose. My break in procedure was to just go out and shoot it. The results looked promising so I tried again today with the same load. Conditions at the range were not quite what I expected. The thermometer in the car registered 10 degrees when I left the range.
    Rifle: Large Martini
    Barrel: PAC-NOR 30 caliber polygonal rifling and 12 inch twist chambered to .30/30
    Scope: Lyman 20x
    Boolit: Eagan MX3 30AR – linotype – cast at 0.312” and sized at 0.312”
    Lube: Felix
    Gas Check: 0.014” aluminum using PatMarlin’s dies
    Powder: 27.5 grains 4895 (about 2000 fps)
    Primer: Winchester large Pistol
    Cases: F-C
    Target was shot at 100 yards. Left to right targets – 1” --- 13/16” --- 13/16”
    Inside of barrel looks the same as my Hi-Wall with a Douglas Premium 12 twist barrel as far as fouling is concerned.
    I am very happy with the polygonal barrel using cast boolits.
    Attached Thumbnails Attached Thumbnails 100_0304.jpg  

  2. #2
    Moderator Emeritus JeffinNZ's Avatar
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    Nice.
    Thermal underwear style guru.
    "Exclusive international distributor of Jeff Brown Hunt Club clothing."
    Supplier to the rich(?) and infamous.

    Cheers from New Zealand

    Jeff.

  3. #3
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    tomme boy's Avatar
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    That is very nice! How does it clean up compared to standard rifling?

  4. #4
    Boolit Buddy
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    Those are great groups !
    Nice work !
    Who said lead bullets won't shoot worth a hoot in polygonal barrels ?

  5. #5
    Boolit Master




    EMC45's Avatar
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    Well done!
    You can miss fast & you can miss a lot, but only hits count.

  6. #6
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    PatMarlin's Avatar
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    Awesome Robert....!

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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