6 x45 and 6.8 I don't know much about these 2?
- Thread starter lonewolf
- Start date
nastynatesfish
Active member
I'm just getting into the 68 game so I been looking for info too
coyote6974
New member
Lone Wolf, I own a 6.8 and enjoy it tremendously. Mine is a 16" Bison Armory upper mounted over a RRA lower fitted with a Timney 3# trigger group. I shoot 90 grain Speer and Sierra bullets from mine with good accuracy. I load them to 2850 FPS. It kills coyotes very well.
Should you decide to go with the 6.8 SPC be sure to get an upper with the SPC II chamber and at least a 1-11 twist. Most manufacturers are now chambering the 6.8 with the SPCII chamber to allow the use of improved ammunition.
Factory loaded ammunition is readily available for the 6.8 SPC. Hornady, Remington, SSA, and a couple others are loading it.
For much more info on the 6.8 SPC go to 68forums.com. there's lots of good stuff there.
Should you decide to go with the 6.8 SPC be sure to get an upper with the SPC II chamber and at least a 1-11 twist. Most manufacturers are now chambering the 6.8 with the SPCII chamber to allow the use of improved ammunition.
Factory loaded ammunition is readily available for the 6.8 SPC. Hornady, Remington, SSA, and a couple others are loading it.
For much more info on the 6.8 SPC go to 68forums.com. there's lots of good stuff there.
scottmilk9
New member
a 6.8SPC is like a mini .270, hits real hard, Glenn G just killed a boar over 300lbs with one of my 6.8's. Great deer gun in my opinion.
6x45 is a great coyote gun and i know lots of killed deer with it, but i would choose something before the 6x45 for deer. Like Venatic said, its cheap to load, uses standard 223 brass.
foot pounds of energy @100yds for each compared to a .223 is:
.223= 1100 with a 55gr bullet
6x45= 1200 with a 75gr bullet
6.8spc=1650 with a 115gr bullet
6x45 is a great coyote gun and i know lots of killed deer with it, but i would choose something before the 6x45 for deer. Like Venatic said, its cheap to load, uses standard 223 brass.
foot pounds of energy @100yds for each compared to a .223 is:
.223= 1100 with a 55gr bullet
6x45= 1200 with a 75gr bullet
6.8spc=1650 with a 115gr bullet
ricky_arthur
New member
Originally Posted By: lonewolfWith the 6.8SPC you can still use the AR-15 lower right?
Yes, there is nothing different about the lower (except the Magazine,) if you already have an ar15 you could get away with buying just an upper for deer hunting. The only differences are in the upper ie BBL and Bolt carrier group.
If you are looking for something to hunt deer with in the Ar-15 platform, it's tough to beat the 6.8spc. I have 2 and both get used on deer every year. (Mule deer, not those scrawny whitetails...Jk lol)
Yes, there is nothing different about the lower (except the Magazine,) if you already have an ar15 you could get away with buying just an upper for deer hunting. The only differences are in the upper ie BBL and Bolt carrier group.
If you are looking for something to hunt deer with in the Ar-15 platform, it's tough to beat the 6.8spc. I have 2 and both get used on deer every year. (Mule deer, not those scrawny whitetails...Jk lol)
Sfsmedic
New member
Hello all brand new here and this is my first post. I do know the 6.8s well as I have one and have built a few. As previously stated there are a few things you want to look for. A SPC II or greater chamber, meaning the SPC II or 6.8x43 which AR15Performance builds. Also 1:11-12 twist. Yes it stocks right up to any AR-15 lower. You can use 5.56 magazines and not load to full capacity however there are many 6.8 dedicated magazines. For you hand loaders, the PRI mags allow you to load to 2.30 COAL while the ASC's (basically former C-products) allow 2.285. 6.8s like to be loaded long and gain no benefit really in barrels longer than 18"s. In fact a 16" only loses about 50 fps to an 18 so short barrels are great for hunting. Small rifle primer brass (SSA and Hornady)is preferred over large rifle primer Remington brass.
I currently load Barnes 85gr RRLP and TSX with 29.5gr of R-7 in SSA brass using CCI 41 SRP. I am hitting the 3k mark for FPS. The 95gr TTSX are an excellent hunting round for pig and deer and even slightly bigger if you have the ability. It is a great rifle out to about 300 yds for hunting anything beyond that may be considered irresponsible unless you are the beast marksman that I am not, lol. The bullet range right now is 85gr up to the 120 SST's limited by COAL in the magazine. I know that there is more but I cant think of anything off the top of my head.
Oh one more thing, my build!
I run an AeroPrecision Lower with a Geiselle SSA-E trigger and PRI magazines (so I can load long weeee!), Magpul CTR stock and Magpul MIAD grip. The upper is a Tactical Machining upper reciever, with AR15Performance Nitro Carb'd 16" Light profile barrel with a 13" Troy TRX Extreme freefloat and ITS HF Muzzle Device, its topped with a Trijicon Accupoint 3-9x40 mildot with green illum dot. The rifle shoots better than I can and is easy sub-moa. The recoil is super light which makes it great for a young hunter and in all honesty the way I set up my rifle is very light as well (pure accident).
EDIT!: I remembered something very important. Make sure the rifle has M4 feed ramps! Makes a huge difference in reliably feeding the round. Stag (and I love my Stag 5.56) has had problems with their 6.8s because of this very reason. Granted you could add them in after the fact if your confident and competent with a dremel
I currently load Barnes 85gr RRLP and TSX with 29.5gr of R-7 in SSA brass using CCI 41 SRP. I am hitting the 3k mark for FPS. The 95gr TTSX are an excellent hunting round for pig and deer and even slightly bigger if you have the ability. It is a great rifle out to about 300 yds for hunting anything beyond that may be considered irresponsible unless you are the beast marksman that I am not, lol. The bullet range right now is 85gr up to the 120 SST's limited by COAL in the magazine. I know that there is more but I cant think of anything off the top of my head.
Oh one more thing, my build!
I run an AeroPrecision Lower with a Geiselle SSA-E trigger and PRI magazines (so I can load long weeee!), Magpul CTR stock and Magpul MIAD grip. The upper is a Tactical Machining upper reciever, with AR15Performance Nitro Carb'd 16" Light profile barrel with a 13" Troy TRX Extreme freefloat and ITS HF Muzzle Device, its topped with a Trijicon Accupoint 3-9x40 mildot with green illum dot. The rifle shoots better than I can and is easy sub-moa. The recoil is super light which makes it great for a young hunter and in all honesty the way I set up my rifle is very light as well (pure accident).
EDIT!: I remembered something very important. Make sure the rifle has M4 feed ramps! Makes a huge difference in reliably feeding the round. Stag (and I love my Stag 5.56) has had problems with their 6.8s because of this very reason. Granted you could add them in after the fact if your confident and competent with a dremel
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Sfsmedic
New member
Thank you, I ran out and took some pics for a couple reasons to show its similarities to the 5.56 size wise and of course a little bragging lol.
With my old Vortex Viper 6.5-20x50 on it. Great optic but too much zoom cutting down my FOV too much. Great night visibility with this thing though!
Also i was able to push my optic forward considerably with the larue mount instead of the traditional style rings.
With my old Vortex Viper 6.5-20x50 on it. Great optic but too much zoom cutting down my FOV too much. Great night visibility with this thing though!
Also i was able to push my optic forward considerably with the larue mount instead of the traditional style rings.
Hidenseekpro
Member
That's exactly what I've been wanting to see, a 16" rifle with that Troy 13" handle. That looks really good.
Does the Troy mate to the flat top well enough you'd feel comfortable "bridging" the seam with the Larue mount?
Does the Troy mate to the flat top well enough you'd feel comfortable "bridging" the seam with the Larue mount?
Sfsmedic
New member
I think the seam is pretty flawless however that's the point of the cantilever mount to not have to do that. Larue makes one that pushes even further out. It isn't really advisable to put optic mounts on the freefloat handguard (except of course iron front sight or some sort of back up sight) because the freefloat handguard isn't as stable as the upper receiver. You use your rest, bipod or sling for off hand shooting your actually putting stress on the freefloat and moving it slightly while the barrel doesn't move. There are two options around that. A true monolithic upper receiver where the freefloat handguard is part of the receiver itself or vltor makes a handguard that goosenecks onto the top of the upper receiver.
Hidenseekpro
Member
Oh yeah, I know about the MRP/MUR?/Whatever else option. I'm considering the Troy for an already-proven LMT upper I've got, so the whole new upper deal is out.
I've also checked out the CASV and decided no on that one, as well. Some of the guys at my job have them on their work rifles ;not sure about it for a calling rifle. I don't like the weight/bulk or the sight-height headaches.
I'm already using an SPR-E from Larue. Just the way I've got it set up now, it sticks over the end of the reciever by about two positions. I guess if I'm getting decent results with the last bit hanging over nothing, putting any rail under it would be an improvement.
I've also checked out the CASV and decided no on that one, as well. Some of the guys at my job have them on their work rifles ;not sure about it for a calling rifle. I don't like the weight/bulk or the sight-height headaches.
I'm already using an SPR-E from Larue. Just the way I've got it set up now, it sticks over the end of the reciever by about two positions. I guess if I'm getting decent results with the last bit hanging over nothing, putting any rail under it would be an improvement.
Sfsmedic
New member
Then i doubt it would be a problem. I really like troys stuff I have their quad on my 5.56 as well. The seem is pretty much flawless so I dontthink you'd have issues. The TRXe is very light and comes with small rail sections to add for flashlight bipod etc. I think you'd be pretty happy with it.