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#5780529 - 06/09/15 09:45 AM 6.8 or 300 BO upper?
Hooper21 Offline
Pro Tracker

Registered: 02/22/07
Posts: 1029
Loc: Parker Co.
For general use - deer, pigs, coyotes, not suppressed, which upper would be best? Finding similar deals on both uppers and ammo, so the most appropriate caliber is the main decision.
Illegitimi Non Carborundum

#5780560 - 06/09/15 10:05 AM Re: 6.8 or 300 BO upper? [Re: Hooper21]
kry226 Online   content

Registered: 01/11/09
Posts: 4723
Loc: Germany

#5780581 - 06/09/15 10:16 AM Re: 6.8 or 300 BO upper? [Re: Hooper21]
DocHorton Online   content
Veteran Tracker

Registered: 12/06/10
Posts: 3344
Loc: DFW
This has been discussed multiple times. Do a search, there are multiple threads on the topic.

I went 300 BO, but I am running a suppressed SBR with thermal.

#5780586 - 06/09/15 10:19 AM Re: 6.8 or 300 BO upper? [Re: Hooper21]
ChadTRG42 Offline
THF Trophy Hunter

Registered: 09/16/09
Posts: 9147
Loc: Lewisville, TX
6.8 has slightly more energy on target, but the 300 blk out has many more bullet and ammo options. 300 blk out for me.
Type 01 and Type 06 FFL

#5780628 - 06/09/15 10:42 AM Re: 6.8 or 300 BO upper? [Re: ChadTRG42]
Oldpaint Offline

Registered: 01/10/13
Posts: 99
Loc: Frisco, TX
I have both. Suppressed/Night Vision 300 BO, all other times 6.8. I also have a 6.8 with night vision and love it. I'm building a 6.8 for a friend now. Great gun for Texas hunting. My daughters love to shoot them too. Hardly any recoil.

#5780668 - 06/09/15 11:06 AM Re: 6.8 or 300 BO upper? [Re: Hooper21]
QuitShootinYoungBucks Offline
THF Trophy Hunter

Registered: 11/01/12
Posts: 6150
Loc: Lubbock, TX
I went 6.8 because I plan mainly on shooting factory ammo at deer up to 200 yards, and the 6.8 puts more energy on target.

#5780701 - 06/09/15 11:25 AM Re: 6.8 or 300 BO upper? [Re: Hooper21]
ccoker Offline
Veteran Tracker

Registered: 09/17/09
Posts: 3286
They both work but I prefer the 6.8, just seems to anchor them faster.

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#5780757 - 06/09/15 12:04 PM Re: 6.8 or 300 BO upper? [Re: Hooper21]
hdfireman Online   content

Registered: 11/29/09
Posts: 717
Loc: Flower Mound
6.8 is what I use mostly suppressed but sometimes unsuppressed, more energy on target
The 6.8 is the #1 choice for hunting deer and hogs in an AR15

#5781026 - 06/09/15 02:25 PM Re: 6.8 or 300 BO upper? [Re: Hooper21]
HuntTXhogs Offline
Veteran Tracker

Registered: 05/04/10
Posts: 2972
Loc: North Ft Worth
6.8 SPC no question - more powder and similar bullets (weight).

There are deals right now on Olympic Arms K16 for around 700.00 for a complete gun, I have been researching the caliber for a buddy so that is where I am coming from.

Edited by HuntTXhogs (06/09/15 02:26 PM)

#5781075 - 06/09/15 02:47 PM Re: 6.8 or 300 BO upper? [Re: Hooper21]
dfwroadkill Offline
Veteran Tracker

Registered: 09/15/09
Posts: 3253
Loc: D/FW, TX
6.8 all day long... up

#5781376 - 06/09/15 06:08 PM Re: 6.8 or 300 BO upper? [Re: Hooper21]
huntandfish Offline
Pro Tracker

Registered: 11/29/07
Posts: 1673
Loc: Seclusion, tx
I'm making a 6.8 sbr tomorrow when my 12.5" barrel arrives. I'm fixing to get rid of my blackout 8.5" noveske barrel that In which I couldn't couldn't warm up to the blackout. Wanted to find something with a little more thump. Palmetto arms also has good plinking/hog/deer ammo for the 6.8. Federal ammo with a 90 grain gold dot bullet moving 2800 fps out of a 16" barrel for 12.99 a box. It's overrun contract ammo that was made for a foreign contractor. If you want heavier round to retain more energy hornady 120 sst suppose to work great. Handloaders are getting 200 fps faster then the factory hornady 120 sst in spc ii barrels, over 2600 fps with a 120 grain sst, thats up there with .243 winchester energy there and out of a 16" barrel.

Bunch of info

#5781718 - 06/09/15 08:54 PM Re: 6.8 or 300 BO upper? [Re: huntandfish]
pertnear Online   content
Bird Dog

Registered: 12/31/14
Posts: 254
Loc: Kingsland, TX
No comparison, pick the 6.8 for deer & hogs. If you handload, you'll find that the bullet makers have designed a number of game bullets for this round in the 90gr to 110gr range. In particular, look at the Nosler 100gr Accubonds.
You can tell a lot about a woman's mood just by her hands. If they are holding a gun, she's probably very unhappy.

My Texas blog:

#5782455 - 06/10/15 10:47 AM Re: 6.8 or 300 BO upper? [Re: Hooper21]
sbakerac Offline

Registered: 06/09/15
Posts: 123
for Hog hunting, do the 300 blkout.
you can get a can and subsonic ammo. quiet as a .22 suppressed with the stopping power to kill a hog

#5782558 - 06/10/15 11:28 AM Re: 6.8 or 300 BO upper? [Re: Hooper21]
okstatefan Offline

Registered: 01/26/13
Posts: 779
Loc: Forney, TX
I've owned both. I still have the 300BLK. I reload for it, so it gives me a lot of options. I have to admit though, I have never loaded or shot subsonic from it.

I'll probably build another 6.8 with an 18" barrel by Fall.

#5782811 - 06/10/15 01:36 PM Re: 6.8 or 300 BO upper? [Re: Hooper21]
huntandfish Offline
Pro Tracker

Registered: 11/29/07
Posts: 1673
Loc: Seclusion, tx
To me the blackout does subsonic and very short sbrs very good. Many people dont realize It's has the same energy as a 556 75 grain bullet out of 16" barrels at 100 yards and 200 yards, just a little more mass with 110 blackout loads! So no blackout for me when i shoot a 556 with heavies already.

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