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6.5 Grendel or 6.8 SPC II
#6499757
10/17/16 11:50 PM
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Joined: Feb 2012
Posts: 1,755
eneat1119
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Looking at either a 20" 6.5 Grendel or a 16" 6.8 SPC II.
Ranges up to 500yds possible but 90% of shots within 200yds. For pigs and deer. Ammo availability not a concern.
I know it's nitpicking but what would you go with?
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Re: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6499785
10/18/16 12:10 AM
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Joined: Jan 2011
Posts: 46,950
Gravytrain
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Upon us all, upon us all, a little rain must fall
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Re: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6499800
10/18/16 12:18 AM
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Joined: Mar 2011
Posts: 2,062
Toxarch
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I went with the 6.5 Grendel.
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: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6499801
10/18/16 12:18 AM
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Joined: Dec 2008
Posts: 41,160
J.G.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: J.G.]
#6499811
10/18/16 12:31 AM
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Joined: Nov 2010
Posts: 29,609
SapperTitan
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come on now 120SST will be fine at 500 I've done it easily now 700 plus it gets tough and the 6.5 might be they best choice. I don't think he can go wrong with either if he doesn't plan to go past 500.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: SapperTitan]
#6499862
10/18/16 01:10 AM
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Joined: Dec 2008
Posts: 41,160
J.G.
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I've spotted both rounds go down range. Throw a cross wind in the equation, and the 6.5 is more repeatable to get hits. The 6.8 was unable to get hits past 700, the 6.5 hit 800 at will, and even hit 1 MOA at 800 multiple times, out of three rifles. No he did not mention past 500, but the data I am sharing should show that the 6.8 is running out of gas at 500 and the 6.5 is not.
I'm not saying anything bad about the 6.8 I know many THFers love it for hunting, and I believe every one of them. I'm just talking about the physics associated with each cartridge.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6499897
10/18/16 01:27 AM
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Bigfoot
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When you add long range in the mix the grendel is the choice. If it is 100% below 200 yards then 6.8
He really answered his own question by throwing in the 500.
Last edited by Bigfoot; 10/18/16 01:28 AM.
GO TRUMP!
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Re: 6.5 Grendel or 6.8 SPC II
[Re: J.G.]
#6499945
10/18/16 01:49 AM
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Joined: Nov 2010
Posts: 29,609
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I've spotted both rounds go down range. Throw a cross wind in the equation, and the 6.5 is more repeatable to get hits. The 6.8 was unable to get hits past 700, the 6.5 hit 800 at will, and even hit 1 MOA at 800 multiple times, out of three rifles. No he did not mention past 500, but the data I am sharing should show that the 6.8 is running out of gas at 500 and the 6.5 is not.
I'm not saying anything bad about the 6.8 I know many THFers love it for hunting, and I believe every one of them. I'm just talking about the physics associated with each cartridge. Gotcha and if I wanted to go beyond 500 id go 6.5 as well
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Re: 6.5 Grendel or 6.8 SPC II
[Re: SapperTitan]
#6499999
10/18/16 02:15 AM
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Joined: Dec 2008
Posts: 41,160
J.G.
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He didn't say beyond 500. I'm only saying that AT 500 the 6.5 has the edge.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6500011
10/18/16 02:20 AM
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Joined: Jan 2012
Posts: 4,753
Nathan Nelson
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If you want to go to 500 yards the 6.5 is the right choice. 6.8 is a great guns and I have several but they are not as good a gun at 500 yards as the 6.5 Grendel.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6500030
10/18/16 02:30 AM
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Joined: Nov 2010
Posts: 29,609
SapperTitan
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Out of curiosity what are the differences between 6.5 Creedmoor and Grendel? BC, bullet weights, more or less powder? Are their ballistics similar?
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Re: 6.5 Grendel or 6.8 SPC II
[Re: J.G.]
#6500049
10/18/16 02:39 AM
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Joined: Jan 2013
Posts: 1,539
okstatefan
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I've spotted both rounds go down range. Throw a cross wind in the equation, and the 6.5 is more repeatable to get hits. The 6.8 was unable to get hits past 700, the 6.5 hit 800 at will, and even hit 1 MOA at 800 multiple times, out of three rifles. No he did not mention past 500, but the data I am sharing should show that the 6.8 is running out of gas at 500 and the 6.5 is not.
I'm not saying anything bad about the 6.8 I know many THFers love it for hunting, and I believe every one of them. I'm just talking about the physics associated with each cartridge. So say a fella decided to go 6.5 Grendel, and thought that maybe 600yd would be the maximum; what barrel length would you suggest? I'm really curious because the 300blk lost its fizz for me. I just sold my upper and supplies and am looking for a better caliber for my lower.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6500050
10/18/16 02:39 AM
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Joined: Jan 2011
Posts: 2,273
boonee
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I'm a 6.5 champion, but my 20" Grendel is my go to AR. I don't like 270, but have friends that love their 6.8s for hunting. When I heard about the 6.5 Grendel, I called and talked with Bill Alexander. He told me out to 600 yards the 20" barrel is plenty, but if you want to go for 1000 then get a 24". Then he said "hell if your hunting in East Texas, a 16" is plenty!" I have one of his early .50 Beowulf rifles, he likes the pics of down hogs! Again, I love 6.5s I have several different ones!
Avenger Firearms 214-577-5818 avengerfirearms@gmail.com
Lifetime NRA member
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Re: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6500090
10/18/16 03:05 AM
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Joined: Dec 2009
Posts: 5,453
Big Fitz
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6.8 is the mostest optimum answer. Go with it and never look back.
I was wrong...on anything technical. Fitz............. is right, ya know............
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Re: 6.5 Grendel or 6.8 SPC II
[Re: SapperTitan]
#6500113
10/18/16 03:17 AM
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Joined: Jan 2012
Posts: 4,753
Nathan Nelson
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Out of curiosity what are the differences between 6.5 Creedmoor and Grendel? BC, bullet weights, more or less powder? Are their ballistics similar? Amount of powder capacity. Creedmoor is basically an improved version of the 260 because Hornady did a real good job on the shoulder geometry. The Grendel was invented in Euro land as they necked down the 7.62x39 to 6.5. Alexander Arms refined the design a little and changed the brass to allow for more PSI. So basically, the 6.5 Creedmoor is a necked down 308 and the 6.5 Grendel is a necked down 7.62x39.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: Nathan Nelson]
#6500117
10/18/16 03:23 AM
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Joined: Nov 2010
Posts: 29,609
SapperTitan
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Out of curiosity what are the differences between 6.5 Creedmoor and Grendel? BC, bullet weights, more or less powder? Are their ballistics similar? Amount of powder capacity. Creedmoor is basically an improved version of the 260 because Hornady did a real good job on the shoulder geometry. The Grendel was invented in Euro land as they necked down the 7.62x39 to 6.5. Alexander Arms refined the design a little and changed the brass to allow for more PSI. So basically, the 6.5 Creedmoor is a necked down 308 and the 6.5 Grendel is a necked down 7.62x39. Thanks very informative
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Re: 6.5 Grendel or 6.8 SPC II
[Re: SapperTitan]
#6500212
10/18/16 10:34 AM
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Joined: Dec 2008
Posts: 41,160
J.G.
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That's not informative, that's completely incorrect.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: SapperTitan]
#6500218
10/18/16 10:42 AM
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Joined: Dec 2008
Posts: 41,160
J.G.
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Out of curiosity what are the differences between 6.5 Creedmoor and Grendel? BC, bullet weights, more or less powder? Are their ballistics similar? No their ballistics aren't similar, that's why the 6.5 does better at distance. The 6.5 is using a bullet with a better BC, which is why it maintains more velocity down range. When you maintain more velocity down range, you wind drift less, and can retain aerodynamic stability farther out. That's why I lost 6.8 in the air after 700 yards, it went subsonic. But the 6.5 is traveling faster at that distance, therefore it is stable.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: eneat1119]
#6500309
10/18/16 12:44 PM
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Joined: Sep 2009
Posts: 4,755
ccoker
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Hunting inside of 300 yards, 6.8 with a 16" barrel at the longest. Pushing past that the 6.5 is better.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: SapperTitan]
#6500418
10/18/16 01:40 PM
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Joined: Nov 2012
Posts: 15,639
QuitShootinYoungBucks
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Out of curiosity what are the differences between 6.5 Creedmoor and Grendel? BC, bullet weights, more or less powder? Are their ballistics similar? Amount of powder capacity. Creedmoor is basically an improved version of the 260 because Hornady did a real good job on the shoulder geometry. The Grendel was invented in Euro land as they necked down the 7.62x39 to 6.5. Alexander Arms refined the design a little and changed the brass to allow for more PSI. So basically, the 6.5 Creedmoor is a necked down 308 and the 6.5 Grendel is a necked down 7.62x39. Thanks very informative Grendel on left, Creedmoor on the right. As you can see, the Creedmoor has a lot more case capacity.
https://web.archive.org/web/20170223065011/http:/www.rrdvegas.com/silencer-cleaning.html
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Re: 6.5 Grendel or 6.8 SPC II
[Re: J.G.]
#6500442
10/18/16 01:51 PM
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Joined: Jun 2009
Posts: 4,194
Korean Redneck
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Out of curiosity what are the differences between 6.5 Creedmoor and Grendel? BC, bullet weights, more or less powder? Are their ballistics similar? No their ballistics aren't similar, that's why the 6.5 does better at distance. The 6.5 is using a bullet with a better BC, which is why it maintains more velocity down range. When you maintain more velocity down range, you wind drift less, and can retain aerodynamic stability farther out. That's why I lost 6.8 in the air after 700 yards, it went subsonic. But the 6.5 is traveling faster at that distance, therefore it is stable. Fireman, looks like u need to spend a little more time slowly reading and a little less time shooting. From the perspective of a layman, meaning not going into details, they r the same bullet but the creedmoor is a bigger case. So no matter the combination, the creedmoor will have "better ballistics." If it's the same bullet then the cm will shoot faster from muzzle. If u can get the same mv from both calibers, which have no idea if it's possible, then the cm will be a heavier bullet versus the Grendel. Once again, I'm sure the experts will can tell u of much finer differences but that what it really boils down to.
I'm a dude who likes long barrels!
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Re: 6.5 Grendel or 6.8 SPC II
[Re: J.G.]
#6500495
10/18/16 02:18 PM
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Joined: Nov 2010
Posts: 29,609
SapperTitan
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Out of curiosity what are the differences between 6.5 Creedmoor and Grendel? BC, bullet weights, more or less powder? Are their ballistics similar? No their ballistics aren't similar, that's why the 6.5 does better at distance. The 6.5 is using a bullet with a better BC, which is why it maintains more velocity down range. When you maintain more velocity down range, you wind drift less, and can retain aerodynamic stability farther out. That's why I lost 6.8 in the air after 700 yards, it went subsonic. But the 6.5 is traveling faster at that distance, therefore it is stable. I think you mis read my question. I was asking about difference between 6.5 Grendel and 6.5 Creedmoor
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Re: 6.5 Grendel or 6.8 SPC II
[Re: SapperTitan]
#6500543
10/18/16 02:51 PM
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Joined: Sep 2016
Posts: 1,088
Creedmoor
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I think you mis read my question. I was asking about difference between 6.5 Grendel and 6.5 Creedmoor That's easy to answer. Creedmoor has more powder capacity. Same caliber bullets. Creedmoor also has the ability to fire larger bullets in some guns due to the longer available OAL. The Grendel will chamber in standard size AR-15 guns. If you want to stay in that same action the Creedmoor requires an AR-10 platform. Do some research and look at the ballistics for both cartridges. If you are planning on nothing larger than hogs & deer at ranges under 300 yards I'd shoot the Grendel without hesitation. If you are thinking about having to go past 450 yards or so the Creedmoor gains a huge advantage.
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Re: 6.5 Grendel or 6.8 SPC II
[Re: Creedmoor]
#6500575
10/18/16 03:10 PM
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Joined: Nov 2010
Posts: 29,609
SapperTitan
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I think you mis read my question. I was asking about difference between 6.5 Grendel and 6.5 Creedmoor That's easy to answer. Creedmoor has more powder capacity. Same caliber bullets. Creedmoor also has the ability to fire larger bullets in some guns due to the longer available OAL. The Grendel will chamber in standard size AR-15 guns. If you want to stay in that same action the Creedmoor requires an AR-10 platform. Do some research and look at the ballistics for both cartridges. If you are planning on nothing larger than hogs & deer at ranges under 300 yards I'd shoot the Grendel without hesitation. If you are thinking about having to go past 450 yards or so the Creedmoor gains a huge advantage. Kind of what I figured thanks
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Re: 6.5 Grendel or 6.8 SPC II
[Re: SapperTitan]
#6501409
10/18/16 11:21 PM
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Joined: Dec 2008
Posts: 41,160
J.G.
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I think you mis read my question. I was asking about difference between 6.5 Grendel and 6.5 Creedmoor I did misread. My apologies. Both 6.5 mm bullets, the Creedmoor has more case capacity which will make more velocity. So load a 130 gr AR hybrid in each case, and the Creedmoor pushes the same exact bullet faster.
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