.300AAC BO powder, projectile and primer questions

[CRAMBONE]

Trying to accumulate components to reload for my rifles.
-What are you guys favorite powders for Blackout? (Supers and subs)
-Favorite supersonic projo for 2-legged varmints?
-Has anyone (DocGK, Shivan etc) done a ballistic test for .300 loads and projos?
-Can/Will magnum pistol primers work sufficiently in Blackout?

[BobinNC]

- Lil Gun for Supers; I don't do Subs.

- 110 grain Hornady V-Max or 110 grain Nosler Varmageddon. I use them interchangeably for HD.

- http://www.brassfetcher.com/Rifles/300%20Blackout/300%20Blackout.html
- https://fenixammo.com/pages/the-ballistics-of-5-56x45mm-vs-300-aac-blackout
- https://www.youtube.com/watch?v=h-7UcDoItQc
- https://www.youtube.com/watch?v=NtQxuQUhPoA
- https://press.hornady.com/assets/pcthumbs/tmp/1410995795-2018-TAP-Application-Guide.pdf (note: you need to scroll down to page 117 for 300 Blackout data)

- I wouldn't use pistol primers magnum or other wise

[M1ashooter]

I'm new to the load but I've had excellent results with 123 thru 147 gr bullets with CFE BLK.

[223to45]

For lighter bullets like 110gr I like to use H110. For heavier like 150gr and up I like A1680

Not sure how the pistol primers would hold up to the bolt slamming forward.

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[223to45]

For the favorite projectile, I like the Barnes 110gr for 300 blk.

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[lonestardiver]

I am using H110 for 220gr subs.

[CRAMBONE]

Not sure how the pistol primers would hold up to the bolt slamming forward.
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I have considered that, as it seems to be a very oftenly discussed concern on the web. I guess it will have to be a trial and error deal because CCI No41s are non-existent. And in addition to an AR with 9” AAC barrel, I have a H&R that sensitive loads can be used in. I inherited a lot of flat nose 30-30 projos and they will be loaded for the H&R.

[gaijin]

110 Barnes Black Tip with H110.
Hornady V Max 110 works as well, but not in same league as the Barnes.

[B Cart]

I reload a lot of 300 BLK, and these are my preferred loads for subs and supers:

Subsonic
220 gr bullet (i've used Nosler, Berrys, Hornady)
10 gr Accurate 1680 powder
Primers: CCI #400
OAL: 2.24

Supersonic plinking loads
150 gr Hornady BT (also used 125 SMks and 135 SSTs)
16.5 gr H110 powder
Primers: CCI #400
OAL: 2.26

Supersonic defense or hunting load
110gr Barnes TTSX
20gr H110 powder
OAL 2.15
Primer CCI #400

These loads have all worked well for me. I've also used Accurate 1680 for supersonic, but prefer H110.

[mack7.62]

Not my first choice but I would use magnum small pistol primers if it was all I could find. I don't think you really need 41's, any small rifle primer works.

Bullets Banes TSX are good but expensive, a more cost effective solution are the Nosler 30 Caliber 110 Grain Varmageddon FB Tipped or the Speer TNT 125 grain.

Powder Win 296, H 110, Lil Gun for supers, for lighter bullets I don't think that CFE Blkout gives the highest velocity .

[gunnerblue]

110 gr. Barnes with H110 or Lil'Gun. Heavy Sierra and Hornady BTHP's for subsonic fun. I've used mostly Federal SR primers, occasionally CCI.

I recall Doc Roberts stating that the 110 gr. Barnes overpenetrated too much to be considered optimal in HD/SD use.

[matemike]

Win 296 if you can't find H110 or Lil gun

[gunnerblue]

Win 296 if you can't find H110 or Lil gun

300-MP would probably work as well. It seems to still be readily available in my area

[JimmyB62]

I use Berry’s 220’s. 12 gr of 1680 keeps me subsonic at 1019 fps from my 9” gun but will be supersonic in a 16”. 10 gr stays subsonic in a 16” but I haven’t chrono’d it.