Could someone post a picture of a 300 blackout round loaded with the hornady 150gr fmj.
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Could someone post a picture of a 300 blackout round loaded with the hornady 150gr fmj.
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Do you guys seat to the cannelure , or to hornady’s recommended 2.220”?
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Cannelures should never be used as a reference for seating depth. It's merely a mechanical bond securing the jacket to the core. Stick with the manufacturers recommendations for seating depth or adjust accordingly to what your rifle prefers.[emoji106]Sent from my SM-J727V using TapatalkQuote:
Originally Posted by JeffreyDeGraff
I guess I should’ve asked, what OAL do you guys,that load this bullet, use?Quote:
Originally Posted by CodySPowell
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You're going to get a bunch of different answers on that. I seat 50gr Zmax at 2.250, but that's what my gun likes. Others seat to 2.200. If you have any doubts or something looks off, double check your data.Sent from my SM-J727V using TapatalkQuote:
Originally Posted by JeffreyDeGraff
I don't know what powder you're using, but I'd go with their load data. The Hornady book says 2.090 OAL for their 150gr fmj.Sent from my SM-J727V using TapatalkQuote:
Originally Posted by CodySPowell
That must be the 10th edition. 9th edition says 2.220”
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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?Sent from my SM-J727V using TapatalkQuote:
Originally Posted by JeffreyDeGraff
H110
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Here's is Hodgdons data, and the second edition book calls for 2.235 for H110. Hope this helps.Attachment 239Quote:
Originally Posted by JeffreyDeGraff
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Have already looked at data from 4 or 5 books, and online too. Was just curious what other people were doing. From what I can tell, the reason hornady went from 2.220” to 2.090” is because people were running into rifles with short throats and having pressure issues, from bullets being jammed into the lands.
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So I went to my friends house last night and measured the throat on all 3 of his blackouts. Ruger American Ranch, 8.5” AR, and a 10.5” AR. The shortest by far was the Ruger (they have really short throats). The max COAL for each was, Ruger - 2.024”, 10.5” AR - 2.202”, and the 8.5”AR - 2.062”. So even hornady’s new OAL in the 10th edition is long for 2 of these guns.
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Out of curiosity, what is factory ammo OAL?Sent from my SM-J727V using TapatalkQuote:
Originally Posted by JeffreyDeGraff
https://uploads.tapatalk-cdn.com/201...39c1da2a7.jpeg the one on the left is 150gr hornady fmjbt seated to 2.220”. The one on the right is a factory Fiocchi 147gr fmj at 2.154”
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Pretty sure that's for their IB bullet, which is incorrect anyways.Quote:
Originally Posted by JeffreyDeGraff
Hornady published an errata correction to that data: https://press.hornady.com/assets/pct...1522702177.pdf
Quote:
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”
I've been loading 150 gr fmjbt bullets in 300blk for quite some time. Once you find the load, very accurate. No I don't seat to the channelure. Puts the bullet to deep in the case and will increase pressure because you are removing case volume.
Had to load to the shortest throat, so they would function in all 3. The seating depth ended up being just past the cannelure.Quote:
Originally Posted by handcannon
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