AR15 in a 6.8 SPC?? - XDTalk Forums - Your HS2000/SA-XD Information Source!

Reno82 · 03-08-2008, 11:59 PM

Anybody have a 6.8 SPC upper? Did it match or fit in with your lower AR 15 223/5.56? Did you have to buy new magz for that size caliber? Like to use it for hunting Deer or Caribou... any thoughts on this?

Dibs50 · 03-09-2008, 12:10 AM

Reno,

I don't have a 6.8 upper but I've been looking at them. Yes, it will fit an AR .223/5.56 lower. However, you will need new mags.

The ballistics are better than the .223. I might hunt deer with a 6.8 but I'm not sure about a caribou. I've never hunted for them but they seem to be a bigger animal that would require a larger cartridge. As with any cartridge, shot placement is everything.

Good luck and let us know when you pic one up.

Jim

Reno82 · 03-09-2008, 12:15 AM

Found this link.... hunting with a 6.8 SPC
Ko-tonics - Hunting with 6.8 SPC

**Mad Geek** · 03-09-2008, 12:38 AM

Quote:

Originally Posted by Reno82

Anybody have a 6.8 SPC upper? Did it match or fit in with your lower AR 15 223/5.56? Did you have to buy new magz for that size caliber? Like to use it for hunting Deer or Caribou... any thoughts on this?

I bought a Stag 5.56 Lower (no different than the Stag 6.8 lower except the letters stamped on it and the price). I put a Stag 6.8 16" upper with it. The 6.8 SPC DOES requires different magazines than the 5.56/.223, but everything else is pretty much the same.

The link to ko-tonics website or 6.8Forums.com would provide you with a wealth of information on an AR in that caliber. If you're just planning on hunting with it or are going to be reloading your own ammo it's a GREAT choice. It doesn't have much more recoil than a 5.56 has a little better knock-down than some smaller calibers. Personally I'd use a larger caliber for what you're talking about hunting, but it's probably already been done with a 6.8. I'll use mine for deer, pig and coyote.

Don't want to start a 6.8 SPC vs 6.5 Grendel war, so the links above will give you some places to start.

My 6.8 SPC AR is a GREAT shootin' little rifle.

Collander · 03-09-2008, 11:20 AM

make sure your lower is marked for caliber 6.8 or multi to keep the atf happy.

**Mad Geek** · 03-09-2008, 11:59 AM

Quote:

Originally Posted by Collander

make sure your lower is marked for caliber 6.8 or multi to keep the atf happy.

I'm not sure I understand the reasoning behind that.

Reno82 · 03-09-2008, 12:19 PM

Thanks Mad Geek...

nb forrest · 03-09-2008, 12:29 PM

Quote:

Originally Posted by Collander

make sure your lower is marked for caliber 6.8 or multi to keep the atf happy.

Changing calibers does not violate any laws. People do it everyday.

rogerxd45 · 03-09-2008, 12:34 PM

i would look into the 6.5 grendel it has MUCH better ballistics at long range. the 6.8 starts to drop really really fast after 300 yards or so (not sure on the exact number)

also wolf makes 6.5 grendel ammo with reloadable brass cases

the 6.5 grendel uses high BC bullets so at the longer ranges it will out perform 6.8spc,5.56, 7.62x39,
and it is flatter shooting then the 308

im sorry i dont have any links but ill look to see what i can find

ckuplent · 03-09-2008, 01:07 PM

I stumbled onto the 6.8 being a dealer for CProducts. I don't have an upper yet, but the more I read on it the more I want one. Seems like it would make an excellent deer gun.

03-08-2008, 11:59 PM	#1
Reno82 XDTalk 1K Member Join Date: Jun 2007 Location: Alaska Posts: 1,158	AR15 in a 6.8 SPC?? Anybody have a 6.8 SPC upper? Did it match or fit in with your lower AR 15 223/5.56? Did you have to buy new magz for that size caliber? Like to use it for hunting Deer or Caribou... any thoughts on this? __________________ *** XD-45acp Service (Match Gun I changed it to a compact for CCW... did a grip chop on it) Ruger Mark III 22/45 Kimber SS Custom Target II 10mm Walther G22 (FUN GUN) XD-45acp Tactical (Match Gun II; upgraded the bbl from PistolGear) XD-9 Sub-Compact (Home Defense and CCW) DPMS AR-15: 9mm (1/17/08...) RRA CAR A4 Upper 223/5.56---did a lower bulid 6/3/08 and bought completed upper 2/21/08 S&W 642 38 special w/ CT grips (Home Defense & CCW) in order of purchases**

03-09-2008, 12:10 AM	#2
Dibs50 XDTalk 100 Member Join Date: Jul 2006 Location: Manchester, NH Posts: 131	Reno, I don't have a 6.8 upper but I've been looking at them. Yes, it will fit an AR .223/5.56 lower. However, you will need new mags. The ballistics are better than the .223. I might hunt deer with a 6.8 but I'm not sure about a caribou. I've never hunted for them but they seem to be a bigger animal that would require a larger cartridge. As with any cartridge, shot placement is everything. Good luck and let us know when you pic one up. Jim __________________ Jim XD 45 ACP Tac "When the people find they can vote themselves money, that will herald the end of the republic." Benjamin Franklin - Founding Father (1706-1790) How soon we forget history...Government is not reason. Government is not eloquence. It is force. And, like fire, it is a dangerous servant and a fearful master." George Washington - Founding Father (1732-1799)

03-09-2008, 12:15 AM	#3
Reno82 XDTalk 1K Member Join Date: Jun 2007 Location: Alaska Posts: 1,158	Found this link.... hunting with a 6.8 SPC Ko-tonics - Hunting with 6.8 SPC __________________ *** XD-45acp Service (Match Gun I changed it to a compact for CCW... did a grip chop on it) Ruger Mark III 22/45 Kimber SS Custom Target II 10mm Walther G22 (FUN GUN) XD-45acp Tactical (Match Gun II; upgraded the bbl from PistolGear) XD-9 Sub-Compact (Home Defense and CCW) DPMS AR-15: 9mm (1/17/08...) RRA CAR A4 Upper 223/5.56---did a lower bulid 6/3/08 and bought completed upper 2/21/08 S&W 642 38 special w/ CT grips (Home Defense & CCW) in order of purchases**

03-09-2008, 12:19 PM	#7
Reno82 XDTalk 1K Member Join Date: Jun 2007 Location: Alaska Posts: 1,158	Thanks Mad Geek... __________________ *** XD-45acp Service (Match Gun I changed it to a compact for CCW... did a grip chop on it) Ruger Mark III 22/45 Kimber SS Custom Target II 10mm Walther G22 (FUN GUN) XD-45acp Tactical (Match Gun II; upgraded the bbl from PistolGear) XD-9 Sub-Compact (Home Defense and CCW) DPMS AR-15: 9mm (1/17/08...) RRA CAR A4 Upper 223/5.56---did a lower bulid 6/3/08 and bought completed upper 2/21/08 S&W 642 38 special w/ CT grips (Home Defense & CCW) in order of purchases**

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03-09-2008, 11:20 AM	#5
Collander XDTalk 500 Member Join Date: Jan 2007 Location: Snohomish, WA Posts: 734	make sure your lower is marked for caliber 6.8 or multi to keep the atf happy.

03-09-2008, 12:34 PM	#9
rogerxd45 XDTalk 3K Member Join Date: May 2007 Location: boise ID (its boy-see, not boy-z) Posts: 3,592	i would look into the 6.5 grendel it has MUCH better ballistics at long range. the 6.8 starts to drop really really fast after 300 yards or so (not sure on the exact number) also wolf makes 6.5 grendel ammo with reloadable brass cases the 6.5 grendel uses high BC bullets so at the longer ranges it will out perform 6.8spc,5.56, 7.62x39, and it is flatter shooting then the 308 im sorry i dont have any links but ill look to see what i can find

03-09-2008, 01:07 PM	#10
ckuplent XDTalk 100 Member Join Date: Feb 2008 Location: Hippytown, Oregon Posts: 145	I stumbled onto the 6.8 being a dealer for CProducts. I don't have an upper yet, but the more I read on it the more I want one. Seems like it would make an excellent deer gun.