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Thread: Gas check?

  1. #1
    Boolit Buddy Iwsbull's Avatar
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    Jul 2019
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    Alabama
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    Gas check?

    I am about to start loading for a 454 casull and am looking at about a 290-300 grain Keith style boolit that I plan to push around 1300-1400 FPS. I powdercoat so I am wondering if that will suffice for straight ww or if I need to go with a gas check also. SRH 7 1/2” if that matters. I have good results in the 44 at about 1300 with a 265 grain Keith boolit plain base so I think I might be alright with the 454 at similar velocity. I will be ordering a mold from Tom at accurate molds.

  2. #2
    Banned
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    Dec 2018
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    3,409
    I wouldn't bother with a gas check around 1300-1400 FPS especially if you powdercoat.
    I push 377grns in a 50 AE past 1300 fps ++P with no GC

  3. #3
    Boolit Master
    Hick's Avatar
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    Nov 2015
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    1,600
    Not as large a caliber, but I've run powder coated bullets over 2000 fps in my M1 Garand with no lube and no gas check-- and no leading or fouling of the barrel.
    Hick: Iron sights!

  4. #4
    Boolit Buddy Iwsbull's Avatar
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    Good that was what I was hoping for.

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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