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Thread: AR 300 Blackout pistol and exposed tip pills.

  1. #1
    Boolit Master



    Join Date
    Oct 2008
    Location
    LEESBURG VA
    Posts
    705

    AR 300 Blackout pistol and exposed tip pills.

    I think I've got the 5.7 casing .308 round nose pills system down, however the best I can get is 180 gr. with out exposing the tip to get the last 10 gr. for 190 sub Sonics. Has any one used exposed tips in a 300 blackout? I know there are shooters who are using cast Boolits, but they are harder lead which takes a little more abuse in semi autos.
    Thanks,
    Bill

  2. #2
    Boolit Master
    Join Date
    Mar 2010
    Location
    NW Missouri
    Posts
    334
    What nose shape are you using?

    I run lead tip Bullets in my ARs often.

    The size and shape of the lead tip seem to make a difference, with a 4 ogive on the blackout being about perfect.

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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