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Thread: Will the same boolit at the same velocity but a different powder have different POI?

  1. 07-17-2021, 06:37 AM #21
    Shanghai Jack
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    Quote Originally Posted by mr surveyor View Post
    I have to ask .... what do you mean by "fired bullet to reach it's peak"?

    Just asking


    jd
    Will

    I initially said perpendicular instead of parallel - William identified it and I corrected itl
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  2. 07-17-2021, 06:45 AM #22
    William Yanda
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    Quote Originally Posted by Shanghai Jack View Post
    Yes the identical bullet, not the same bullet. As for the time to reach its peak, I shouldn't take my medicine before I post. Perfectly parallel to the surface. Thanks for catching that error
    Now that changes things. LOL I read your original post literally, didn't think about the similar situation oriented 90 degrees differently.
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  3. 07-17-2021, 09:27 AM #23
    Cosmic_Charlie
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    Pistol barrels are short and rigid compared to most rifle barrels. Yet, different powders do deliver different results. I have always thought that the pressure curve was the cause, how fast the boolit is forced into the rifling and it's rate of acceleration down the barrel. This is pure speculation though.
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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