Is 300 Blackout/Whisper accurate?

[MitchInOR]

This is a round I have been contemplating for a few years now. It seems that this is made for AR-15 to run subsonic although it gets chambered in other platforms and ran at super sonic velocities. Searching a few forums I am not finding a lot of information on subsonic accuracy in an AR-15. Most accuracy claims I have found are with full power loads and/or bolt action rifles.

That said if you are running this in an AR-15 with subsonic heavies any claims on how your rifle shoots as far as moa and specs of your rig would be much appreciated.

 

[Eagle1*]

Re: Is 300 Blackout/Whisper accurate?

Well, it seems the blackout round is becoming a favorite among alot of people including me. I have a friend that has just built a Noveske 300 Blackout rifle and it shoots very good with his reloads. I am actually impressed with it to say the least.

 

[Sami]

Re: Is 300 Blackout/Whisper accurate?

I should get more time behind my Whisper and Blackout barrels soon. So far no real idea on how accurate they are but MOA at least should be obtainable once I get loads figured out.

 

[tansinator]

Re: Is 300 Blackout/Whisper accurate?

I have a 300 whisper and a 300/221 fireball. I have only shot subsonics 240 sierras and VV N110. Both shoot one hole at 50 yards. Group opens up to one inch + or minus a little at 100 yards. No little groups for me at distance. 300 whisper is in AR platform, 300/221 is in bolt form. Accuracy is the same in both. I think if the powder filled more of the case it might become more consistant.

Eddie

 

[MitchInOR]

Re: Is 300 Blackout/Whisper accurate?

I guess 1 moa is ok. Anyone else shooting this?

 

[Hoser]

Re: Is 300 Blackout/Whisper accurate?

My short barrel upper will hold just under 1MOA out to 250 or so if I weigh every charge.

When throwing 10 gns or under of powder, being off just a little plays hell on your vertical. ES/SD is critical.

Now days I only load for accuracy with my bolt gun.

 

[MLC]

Re: Is 300 Blackout/Whisper accurate?

What kind of accuracy are you guys getting with bolt guns.
Do you have to lube your bores to get consistent velocities?

 

[wolf10t]

Re: Is 300 Blackout/Whisper accurate?

Its funny how 1 MOA used to be the gold standard, now everybody thinks every gun needs to be sub MOA.

 

[PLeighton]

Re: Is 300 Blackout/Whisper accurate?

My Noveske 10" 300 BLK barrel holds 1 MOA out to 300 yards with subsonic 220 SMKs.

 

[leadbullet]

Re: Is 300 Blackout/Whisper accurate?

My SI defense 16" barrel hold 1 MOA to 200 yds, I don't really care much about tiny groups as much as hitting my targets all the time, which it does with supersonic and subsonic ammo
Pretty happy with it.

 

[MitchInOR]

Re: Is 300 Blackout/Whisper accurate?

Dr. Phil that is good to hear. Are you using factory ammo or hand loads?

 

[PLeighton]

Re: Is 300 Blackout/Whisper accurate?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MitchinOR</div><div class="ubbcode-body">Dr. Phil that is good to hear. Are you using factory ammo or hand loads? </div></div>
Hand loads...

Fed 205M Primer
Converted 5.56 LC brass
(Primer pocket swaged, uniformed, & then flash hole debured)
10.8 grains of AA1680
220 SMK (No Crimp)
Forster 300 BLK "Ultra" die set.

 

[rsilvers]

Re: Is 300 Blackout/Whisper accurate?

http://thetruthaboutguns.com/2011/07/foghorn/ammunition-review-300-aac-blackout/

http://www.youtube.com/watch?v=Xo0AHqr3o3M&feature=player_embedded

 

[colt933]

Re: Is 300 Blackout/Whisper accurate?

Getting 1MOA or less from AAC 16" AR15 barrel and SSK 16" Win M70 both with subsonic 220SMK/1680 handloads.

As an added bonus, the AAC barrel cycles the subsonic loads with or without the can installed. Bolt gun is MUCH quieter of course.

 

[silentbushmaster]

Re: Is 300 Blackout/Whisper accurate?

With the right twist and load, very accurate.

 

[SgtKope]

Re: Is 300 Blackout/Whisper accurate?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Silentbushmaster</div><div class="ubbcode-body">With the right twist and load, very accurate.
</div></div>

Take your crap somewhere else. 25 posts that are one sentence long in under an hour! How has this guy not been banned yet?

 

[Ishallbie O'Cullkillin]

Re: Is 300 Blackout/Whisper accurate?

I assembled a 300/221 SBR upper using a 10.5" Model One barrel. I had to open the gas port to .086" to get my most accurate subsonic load to cycle.
8.8gr AA#9 is pushing the 220gr SMK's to 1050fps and is always MOA and better. I was amazed at the penetration I was getting, coming out the other side of 5" dry oak slabs, and all the way through 12" green alder log. I want something lighter that will expend more energy in a target & not overpenetrate.

 

[rsilvers]

Re: Is 300 Blackout/Whisper accurate?

By the way, Midway has match ammo now:

http://www.midwayusa.com/viewProduct/?productNumber=187667