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6.8 v 6.5G v .300BLK
#5637822
03/06/15 05:18 PM
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Joined: Nov 2012
Posts: 15,682
QuitShootinYoungBucks
OP
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OP
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Thinking about an additional upper, for deer out to 200. 6.8 seems to be the best compromise of off-the-shelf ammo vs ballistic capability, although with .300 you have the subs possibility. 6.5 is obviously the most powerful but has limited ammo options, and I can always pull out the bolt actions in 7mm-08 or .308 at that point. What say ye?
https://web.archive.org/web/20170223065011/http:/www.rrdvegas.com/silencer-cleaning.html
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5637835
03/06/15 05:24 PM
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Joined: Feb 2015
Posts: 473
Beaubien
Bird Dog
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I am partial to the 300 blk. I haven't shot the other rounds so I cannot offer a comparison. One thing I like about it is the use of standard AR mags. There is a wide range of projectile possibilities from 110 to over 200 grains.
Mine has taken many pigs and a couple of coyotes.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5637990
03/06/15 07:14 PM
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Joined: Nov 2009
Posts: 915
hdfireman
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Big fan of the 6.8 caliber and believe it is the best hunting caliber on the AR platform. The 6.8 is neck and neck with the Grendal until about 300 yards, at that point the grendal has the edge. That being said the 6.8 has a wider range of bullet options and ammo availability. Next is the 300BO, all I will say is I have friends and customers that bought into the 300 hype for hogs and shortly after that sold them for a 6.8. I personally don't own a 300BO so only speaking from my experiences with other people. I have killed hundreds of pigs with the 6.8 and if you search other forums about hog hunting the 6.8 is the highest percentage caliber used.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638001
03/06/15 07:19 PM
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Joined: Feb 2007
Posts: 26,555
JCB
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If you ain't runnin a can I see no use for the 300BO. 6.8 all the way!
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638060
03/06/15 08:03 PM
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Joined: Feb 2012
Posts: 1,755
eneat1119
Pro Tracker
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Simple reason I love the .300 Blackout. Hits pretty damn hard with Barnes Vor-TX 110gr at ranges less than 150yds and recoils like a .223/5.56. Also my AAC MPW is pretty damn accurate.
Most of my shots are within that range and my 8yr old son can use it with ease. Win, win.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638278
03/06/15 10:47 PM
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Joined: Mar 2012
Posts: 3,809
Cleric
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I am in the same debate... I have a 300 BO that i will use for hogs inside 100 yards.
I wanted an extra upper for deer rifle back up. The 6.5 has the better bullets but the 6.8 has the better availability. If the 6.8 had the AMAX bullet i would be game. But all there is is hunting bullets.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638282
03/06/15 10:48 PM
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Joined: Mar 2011
Posts: 2,062
Toxarch
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If you want to shoot quiet and have a can, then I'd say go 300blk. Especially go that route if you are going with a short SBR. My SBR 300blk with a can attached is shorter than a 16" rifle. If you don't have a can, then the 6.8 is a sweet shooting low recoil round. I've never shot the 6.5G.
I've never had a problem shooting deer or pigs with the 300blk. Out to 200 yards, any of the rifles will work fine. So I would look at availability of the upper/barrel you want and cost/availability of ammo.
It is far more important to be able to hit the target than it is to haggle over who makes a weapon or who pulls a trigger.
� Dwight D. Eisenhower
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638295
03/06/15 10:57 PM
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Joined: Nov 2009
Posts: 915
hdfireman
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Info I got from Barnes and Hornady that compares the 2 calibers. The ammunition used is the Barnes 300BO 110r TAC-TX and in the 6.8 it's the Hornady 120gr SST. Both rounds seem to be the go to ammo for both calibers, offering some of the best performing for each caliber.
300BO______Muzzle____100 yards____200 yards____300 yards____400 yards Trajectory____-1.5_________0__________-6.7_________-24__________-55.5 Velocity______2350_______2070_______1810________1574__________1369 Energy_______1349_______1046________800_________606__________458
6.8_________Muzzle____100 yards____200 yards____300 yards____400 yards Trajectory____-2.40________2.2__________0__________10.5_________31.1 Velocity______2460_______2250________2050_________1862________1685 Energy_______1612_______1349________1120_________923__________756
As you can see the 6.8 has less drop than the 300 BO. At 100 yards it has 8% more velocity and 200 yards it has roughly 12% more. At 100 yards the 6.8 has 22% more energy and at 200 yards it becomes roughly 28% more than the 300BO. Pretty cut and dry!!
This data came from the ammo manufactures website.
Last edited by hdfireman; 03/06/15 11:06 PM.
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Re: 6.8 v 6.5G v .300BLK
[Re: hdfireman]
#5638334
03/06/15 11:22 PM
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Joined: Sep 2006
Posts: 32,538
kmon11
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junior
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Info I got from Barnes and Hornady that compares the 2 calibers. The ammunition used is the Barnes 300BO 110r TAC-TX and in the 6.8 it's the Hornady 120gr SST. Both rounds seem to be the go to ammo for both calibers, offering some of the best performing for each caliber.
300BO______Muzzle____100 yards____200 yards____300 yards____400 yards Trajectory____-1.5_________0__________-6.7_________-24__________-55.5 Velocity______2350_______2070_______1810________1574__________1369 Energy_______1349_______1046________800_________606__________458
6.8_________Muzzle____100 yards____200 yards____300 yards____400 yards Trajectory____-2.40________2.2__________0__________10.5_________31.1 Velocity______2460_______2250________2050_________1862________1685 Energy_______1612_______1349________1120_________923__________756
As you can see the 6.8 has less drop than the 300 BO. At 100 yards it has 8% more velocity and 200 yards it has roughly 12% more. At 100 yards the 6.8 has 22% more energy and at 200 yards it becomes roughly 28% more than the 300BO. Pretty cut and dry!!
This data came from the ammo manufactures website. 24 inch barrel. 6.5 Grendel 123gr SST From Hornady website , A-max also available Velocity (fps) / Energy (ft-lbs) MUZZLE____________100__________ 200____________ 300____________ 400_____________500 -2.40__________ 1.80___________ 0.00___________ -8.70__________ -25.30_________ -51.30 2580/1818______ 2410/1586______ 2247/1379______ 2090/1193______ 1940/1028______ 1796/881 Rifle (16" Barrel) Velocity (fps) / Energy (ft-lbs) MUZZLE_________ 100____________ 200____________ 300____________ 400____________ 500 2350/1508______ 2189/1308______ 2034/1129______ 1885/971_______ 1744/831_______ 1612/709
Last edited by kmon1; 03/06/15 11:29 PM.
lf the saying "Liar, Liar your pants on fire" were true Mainstream news might be fun to watch
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638341
03/06/15 11:29 PM
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Joined: Mar 2011
Posts: 2,062
Toxarch
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Apples and oranges. Why aren't you comparing a 110g 300blk bullet to a 110g 6.8 bullet? It's a bigger lighter bullet, of course it's going to be much different. Velocity difference means squat at those speeds and 200 yards. As long as it's enough to expand the bullet with good penetration, what does it matter? A 4.5" difference in drop at 200 yards... not going to matter if you are practiced with your rifle and know the drop. And look at the Trajectory of the 6.8. How does a bullet go from hitting 2.4" high at the barrel, to 2.2" low, to zero, and then to 10.5" low? Isn't that a big 'W' flight pattern? Something isn't right there. Anyway, if you base all your purchases on numbers on a piece of paper, then you should only be hunting with a 50 BMG because its numbers blow away most other rifles. Pretty cut and dry.
It is far more important to be able to hit the target than it is to haggle over who makes a weapon or who pulls a trigger.
� Dwight D. Eisenhower
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Re: 6.8 v 6.5G v .300BLK
[Re: kmon11]
#5638346
03/06/15 11:34 PM
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Joined: Nov 2009
Posts: 915
hdfireman
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6.5 Grendel 123gr SST From Hornady website , A-max also available Velocity (fps) / Energy (ft-lbs) MUZZLE____________100__________ 200____________ 300____________ 400_____________500 2580/1818______ 2410/1586______ 2247/1379______ 2090/1193______ 1940/1028______ 1796/881
Your numbers came from a 24" barrel, not a 16" like the others. So lets compare apples to apples MUZZLE____________100__________ 200____________ 300____________ 400 2350/1508______ 2189/1308______ 2034/1129______ 1885/971______ 1744/831 That makes the 6.8 outperform the Grendal to about 200 yards. After 200 yards the Grendal slowly pulls away
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Re: 6.8 v 6.5G v .300BLK
[Re: Toxarch]
#5638367
03/06/15 11:43 PM
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Joined: Nov 2009
Posts: 915
hdfireman
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Apples and oranges. Why aren't you comparing a 110g 300blk bullet to a 110g 6.8 bullet? It's a bigger lighter bullet, of course it's going to be much different. Velocity difference means squat at those speeds and 200 yards. As long as it's enough to expand the bullet with good penetration, what does it matter? A 4.5" difference in drop at 200 yards... not going to matter if you are practiced with your rifle and know the drop. And look at the Trajectory of the 6.8. How does a bullet go from hitting 2.4" high at the barrel, to 2.2" low, to zero, and then to 10.5" low? Isn't that a big 'W' flight pattern? Something isn't right there. Anyway, if you base all your purchases on numbers on a piece of paper, then you should only be hunting with a 50 BMG because its numbers blow away most other rifles. Pretty cut and dry. I was just putting information out therefor the OP. Energy on target is energy on target!!! I used those 2 bullets because they are supposed to be one on the most effective. Here is a 110 gr Hornady V-max and it still has more energy on target than the 300BO!! 6.8 110 gr Hornady V-max Barrel (16") Velocity (fps) / Energy (ft-lbs) MUZZLE -------------100 ----------200 ---------300 ------400 2550/1588---------2319/1313-------2100/1077------1893/875----1700/706
Last edited by hdfireman; 03/06/15 11:46 PM.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638377
03/06/15 11:48 PM
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Joined: Sep 2012
Posts: 854
Shane431
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I have a 6.8 and 300 BLK. The 6.8 is a little better as 200 yds is close to max for the 300B. But when in doubt get both! The 300B is a beast at close range!
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Re: 6.8 v 6.5G v .300BLK
[Re: hdfireman]
#5638417
03/07/15 12:19 AM
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Joined: Mar 2011
Posts: 2,062
Toxarch
Veteran Tracker
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Apples and oranges. Why aren't you comparing a 110g 300blk bullet to a 110g 6.8 bullet? It's a bigger lighter bullet, of course it's going to be much different. Velocity difference means squat at those speeds and 200 yards. As long as it's enough to expand the bullet with good penetration, what does it matter? A 4.5" difference in drop at 200 yards... not going to matter if you are practiced with your rifle and know the drop. And look at the Trajectory of the 6.8. How does a bullet go from hitting 2.4" high at the barrel, to 2.2" low, to zero, and then to 10.5" low? Isn't that a big 'W' flight pattern? Something isn't right there. Anyway, if you base all your purchases on numbers on a piece of paper, then you should only be hunting with a 50 BMG because its numbers blow away most other rifles. Pretty cut and dry. I was just putting information out therefor the OP. Energy on target is energy on target!!! I used those 2 bullets because they are supposed to be one on the most effective. Here is a 110 gr Hornady V-max and it still has more energy on target than the 300BO!! 6.8 110 gr Hornady V-max Barrel (16") Velocity (fps) / Energy (ft-lbs) MUZZLE -------------100 ----------200 ---------300 ------400 2550/1588---------2319/1313-------2100/1077------1893/875----1700/706 Considering 200 ft/lb of energy will kill a deer or pig, the difference in energy between all 3 rounds in 200 yards is pointless.
It is far more important to be able to hit the target than it is to haggle over who makes a weapon or who pulls a trigger.
� Dwight D. Eisenhower
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Re: 6.8 v 6.5G v .300BLK
[Re: ccoker]
#5638455
03/07/15 12:40 AM
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Joined: Nov 2009
Posts: 915
hdfireman
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638458
03/07/15 12:41 AM
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Joined: Dec 2010
Posts: 594
Texaslawman
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I have the blackout and the 6.8 the blackout stays in the safe now. Compared to the 6.8 the blackout was underperforming on hogs, I don't know about all the numbers just real word experience. Will a blackout kill hogs yes it is the ballistic equivalent of a 30/30. The 6.5 is nice also but I feel the 6.8 will be more commercially available.
So between the three my choices would be 1) 6.8. 2) 6.5 3) 300bo. They will all kill hogs with proper shot placement some provide more room for error than others. Only reason I can see to chose the BO is cost.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638503
03/07/15 01:01 AM
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Joined: Jan 2011
Posts: 3,069
MDMORROW
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It's actually pretty simple. 300 black if you're going to do an sbr and suppress it for short range hunting. If not that scenario then grendel and 6.8. 300 is a very specific gun. For me it is perfect though for my hunting scenario which is night vision and suppressed at less than a hundred yards at night. In distances further than that the 300 sucks. I have two of them and love them but for what you're wanting I think you'll happier with the 6.8. The 300 will bring down huge hogs but shot placement is key just as it is with any other round on a big tough plated hog.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638606
03/07/15 01:44 AM
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Joined: Nov 2009
Posts: 915
hdfireman
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MDMorrow, I agree with you on the 300 BO working well out of SBR's and short distances but the 6.8 performs well out of a SBR also. Where as the 300 BO is good down to +/- 8" the 6.8 does really well at 12.5" and up.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638613
03/07/15 01:49 AM
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Joined: Sep 2012
Posts: 854
Shane431
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Get a 6.8 and a 300BO. You can never have too many choices! Oh, and a 458 socom too!
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Re: 6.8 v 6.5G v .300BLK
[Re: hdfireman]
#5638616
03/07/15 01:52 AM
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Joined: Dec 2008
Posts: 41,228
J.G.
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Stop muddying the waters with scientific data!
Ballistic coefficient paired with muzzle velocity, yeilding more retained velocity and energy is not welcome here!
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638634
03/07/15 01:58 AM
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Joined: Jan 2011
Posts: 3,069
MDMORROW
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I should have clarified. 8.2" noveskes are what I run for a couple reasons. The shorter and lighter the better as most of my hunting involves thermal spotting then stalk up to take the shot. We have a lot of cows so getting up closer for positive ID is a necessity as is a lightweight rifle since a lot of walking is involved. If I was shooting for a longer distance I'd be using something in a large bore AR platform. I had a JP but found I never used it since my chances of a nighttime distance shot on our place is rare.
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Re: 6.8 v 6.5G v .300BLK
[Re: J.G.]
#5638646
03/07/15 02:03 AM
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Joined: Nov 2009
Posts: 915
hdfireman
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Muddying with scientific data?? Lmao. Its performance info off the manufactures website. OP asked a question so I put information out there so they would have info available to choose. No charts or graphs from a program or coefficients. Posted the stuff I looked at when I was deciding on a larger caliber for hunting hogs. If it bothers some folks, don't read it.
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Re: 6.8 v 6.5G v .300BLK
[Re: QuitShootinYoungBucks]
#5638746
03/07/15 02:36 AM
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Joined: Jan 2011
Posts: 2,273
boonee
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Well, I have 2 300 Blackouts, 1 10"SBR, and 1 16". I also have a 20" Grendel, and a .50 Beowulf. I don't own a 6.8, and I don't plan on owning one. But I don't like .270s. (.277) or (6.8) but that is my choice! But I like .264 bullets, and .308 bullets. But, that's why they make so many calibers.
Avenger Firearms 214-577-5818 avengerfirearms@gmail.com
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