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Thread: Lee 309-230 load 300 bk

  1. 01-21-2017, 08:31 PM #1
    clearcut
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    Lee 309-230 load 300 bk

    I'm looking for a load that will cycle my 16" pistol gassed 1:8 AR using IMR4227 and the 230grn. PC'd cast boolit subsonic is not an issue.
    Thanks CC
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  2. 01-22-2017, 01:11 AM #2
    destrux
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    I'd start at 12gr and work up till you get reliable cycling and quit there. Don't take huge steps, 0.25gr increase at a time. Pressures go up quick in a heavy bullet load in the blackout. What someone else has found safe might be over pressure in your gun because of slight differences in load workup or your rifle.
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  3. 01-22-2017, 03:01 AM #3
    wlc
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    Get Hornady's load book. Lots of 300blk data there.
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  4. 01-22-2017, 12:25 PM #4
    clearcut
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    Thanks guys I think I got it.I just didn't have lead data.

    CC
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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