300blackout with 150gr hornady fmj

[JeffreyDeGraff]

That must be the 10th edition. 9th edition says 2.220”


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[CodySPowell]

Yup, 10th edition
The second edition of Modern reloading is anywhere from 2.140-2.235 depending on the powder.
What powder are you using?

That must be the 10th edition. 9th edition says 2.220”


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[MarkDisciplinare]

That must be the 10th edition. 9th edition says 2.220”


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Pretty sure that's for their IB bullet, which is incorrect anyways.

Hornady published an errata correction to that data: https://press.hornady.com/assets/pct...1522702177.pdf

Page 382, 300 Whisper/AAC Blackout – 150-155gr C.O.L.’s should read: GMX-1.962”, InterBond-2.210”,SST-2.210”, FMJ-BT-2.090”, Interlock RN-1.900”, InterLock SP & BTSP-2.106”, A-MAX-2.110”