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Thread: Anyone try W872 in the 450 Bushmaster

  1. 04-04-2022, 07:09 PM #1
    brstevns
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    Anyone try W872 in the 450 Bushmaster

    Don't have any Trailboss but do have some surplus W872 powder. Was thinking subsonic for a 450 Bushmaster bolt rifle.
    Has anyone given it a try.
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  2. 04-05-2022, 04:28 PM #2
    lawdog941
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    Haven't tried it. I see that it's almost at the bottom of the burn rate chart, if you compare it to 50BMG powders. W872 from what I understand is pulldown powder from 20mm Vulcan rounds. I've heard of duplexing it for the 45-70 Gatling, but nothing for the 450BM. You would probably get alot of unburnt or even hangfires.
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  3. 04-05-2022, 05:57 PM #3
    Nobade
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    It certainly will be subsonic. I think you will not be favorably impressed. Make sure every shot actually leaves the barrel.
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  4. 04-05-2022, 06:34 PM #4
    BD
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    I tried WC860, way too slow. Boolit left the barrel, barely, but it didn't cycle the action and unburnt powder was everywhere. I was using large primer brass made from .284 cases and mag pistol primers. I can't imagine 872 would be any better. WC820(s) works very well.
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  5. 04-05-2022, 07:31 PM #5
    brstevns
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    May need to try a duplex load with 4198 as a kicker.
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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