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6.8SPC or 6.5G? Which one should I buy? (Page 14 of 14)
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My 6.5g gave me some grief out the gate- 14.5” pinned monster barrel suppressed. Ended up needing extra power buffer spring, h3, and bootleg BCG on full suppressed setting to calm it down. Consistent 3” groups or less at 220m with PSA black tip. Smaller groups with FGMM. I keep threatening to take my ar10 hunting but the 6.5g slaps |
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Originally Posted By TurtlesAlltheWayDown: My 6.5g gave me some grief out the gate- 14.5” pinned monster barrel suppressed. Ended up needing extra power buffer spring, h3, and bootleg BCG on full suppressed setting to calm it down. Consistent 3” groups or less at 220m with PSA black tip. Smaller groups with FGMM. I keep threatening to take my ar10 hunting but the 6.5g slaps My 16" Grendel Hunter was a problem child. I traced it to being super over-gassed and no matter what setting I put the adjustable gas block on it still wasn't 100%. My fix was a different gas block and H2 then the issues were solved. Mine gets about 2-2.25 MOA with Hornady SST and 1.8-2 MOA with Hornady ELD-M, both 123 grain. AAC 123-grain OTM was about 1.7-2 MOA. I've never tried lighter loads, so I'll be experimenting once my suppressor for it gets approved (AB A-10 7.62). I'm suspecting after I suppress it, I'll need to bump to an H3 and potentially a Bootleg bolt carrier. |
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I one two 6.5 G and four 6.8 SPC uppers. IMO, it's a wash. Ammo is a problem if you don't reload. 95% of people would e better served with a .223 Wylde SPR upper and premium ammo. Solid copper bullets for hunting and match grade/varmint bullets for target shooting. I invested heavily in components when building these uppers. I disagree with everyone who thinks it's okay to hot rod these cartridges. I never exceed published maximums, velocity or powder charges. 6.8 bolts are stronger than 6.5 simply because they have more metal remaining after being opened up. Bill Alexander limited pressure to 50,000 psi because of it. 6.5's have even less of a safety margin. If you run a bolt action these limitations become mute. Breaking parts isn't on my to do list. In my experience both calibers shine with lighter bullets. The heaviest bullets I use in 6.5 G weigh 108 grains. The heaviest I use in 6.8 weigh 115, but I rock 90's for most of my shooting. |
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Originally Posted By borderpatrol: I one two 6.5 G and four 6.8 SPC uppers. IMO, it's a wash. Ammo is a problem if you don't reload. 95% of people would e better served with a .223 Wylde SPR upper and premium ammo. Solid copper bullets for hunting and match grade/varmint bullets for target shooting. I invested heavily in components when building these uppers. I disagree with everyone who thinks it's okay to hot rod these cartridges. I never exceed published maximums, velocity or powder charges. 6.8 bolts are stronger than 6.5 simply because they have more metal remaining after being opened up. Bill Alexander limited pressure to 50,000 psi because of it. 6.5's have even less of a safety margin. If you run a bolt action these limitations become mute. Breaking parts isn't on my to do list. In my experience both calibers shine with lighter bullets. The heaviest bullets I use in 6.5 G weigh 108 grains. The heaviest I use in 6.8 weigh 115, but I rock 90's for most of my shooting. That's good to know. I've never tried the lighter bullets. I really need to. |
Why is the sky blue?
What makes the green grass grow?
What makes the green grass grow?
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Originally Posted By 11boomboom: My 16" Grendel Hunter was a problem child. I traced it to being super over-gassed and no matter what setting I put the adjustable gas block on it still wasn't 100%. My fix was a different gas block and H2 then the issues were solved. Mine gets about 2-2.25 MOA with Hornady SST and 1.8-2 MOA with Hornady ELD-M, both 123 grain. AAC 123-grain OTM was about 1.7-2 MOA. I've never tried lighter loads, so I'll be experimenting once my suppressor for it gets approved (AB A-10 7.62). I'm suspecting after I suppress it, I'll need to bump to an H3 and potentially a Bootleg bolt carrier. Adjustable gas block should be all you need. I only went bootleg due to that upper being pinned and weld. Bootleg BCG is nice though |
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Originally Posted By TurtlesAlltheWayDown: Adjustable gas block should be all you need. I only went bootleg due to that upper being pinned and weld. Bootleg BCG is nice though Originally Posted By TurtlesAlltheWayDown: Originally Posted By 11boomboom: My 16" Grendel Hunter was a problem child. I traced it to being super over-gassed and no matter what setting I put the adjustable gas block on it still wasn't 100%. My fix was a different gas block and H2 then the issues were solved. Mine gets about 2-2.25 MOA with Hornady SST and 1.8-2 MOA with Hornady ELD-M, both 123 grain. AAC 123-grain OTM was about 1.7-2 MOA. I've never tried lighter loads, so I'll be experimenting once my suppressor for it gets approved (AB A-10 7.62). I'm suspecting after I suppress it, I'll need to bump to an H3 and potentially a Bootleg bolt carrier. Adjustable gas block should be all you need. I only went bootleg due to that upper being pinned and weld. Bootleg BCG is nice though No setting on mine worked 100%. I swapped to a YHM low-profile, .750, non-adjustable gas block and it ran perfect. |
Why is the sky blue?
What makes the green grass grow?
What makes the green grass grow?
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Originally Posted By TurtlesAlltheWayDown: Weird, I wonder why. I can’t imagine the yhm gas block hole was smaller than the lowest adjustable gas block setting? No clue, but it works now.  I ordered an AB A10 7.62 suppressor to use on it, so I'll see if I can get it malfunctioning again.  ETA: Well, I was thinking about it this morning, and I figured I wanted to try out adjustable gas again. I ordered a Riflespeed adjustable, variant RS7559, to work with my .750 journal, 15" rail and midlength gas system. |
Why is the sky blue?
What makes the green grass grow?
What makes the green grass grow?
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Originally Posted By 11boomboom: Nice. I'll have to check them out. I bought 2 50pc boxes of the Cavity Back Bullets 105 grain. Preliminary test loads using the AA220 i have on hand show real promise through both my 6.8's. Right off the bat with both rifles i got 1" groups through the DI gun and 3/4" groups out of the Adam's Arms piston kit rifle. Can probably squeeze the DI gun tighter. But will find a generic load that works good through both. That's what I did with the Nosler 110g Accubonds. I still have a really good amount of the Noslers. Just wish they hadn't discontinued them. I have 45-50 of the 50 count boxes, but still buy more when I find them. |
I hated going to weddings. All the grandmas would poke me and say "You're next". They stopped that when I started doing it to them at funerals.
Sic semper evello mortem tyrannis
Sic semper evello mortem tyrannis
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Originally Posted By 11boomboom: That's good to know. I've never tried the lighter bullets. I really need to. Originally Posted By 11boomboom: Originally Posted By borderpatrol: I one two 6.5 G and four 6.8 SPC uppers. IMO, it's a wash. Ammo is a problem if you don't reload. 95% of people would e better served with a .223 Wylde SPR upper and premium ammo. Solid copper bullets for hunting and match grade/varmint bullets for target shooting. I invested heavily in components when building these uppers. I disagree with everyone who thinks it's okay to hot rod these cartridges. I never exceed published maximums, velocity or powder charges. 6.8 bolts are stronger than 6.5 simply because they have more metal remaining after being opened up. Bill Alexander limited pressure to 50,000 psi because of it. 6.5's have even less of a safety margin. If you run a bolt action these limitations become mute. Breaking parts isn't on my to do list. In my experience both calibers shine with lighter bullets. The heaviest bullets I use in 6.5 G weigh 108 grains. The heaviest I use in 6.8 weigh 115, but I rock 90's for most of my shooting. That's good to know. I've never tried the lighter bullets. I really need to. I have a very large amount of 90g Gold Dots when a seller on Gunbroker was selling them in 200 pc lots for $60 delivered. I have around 3k of them. Also bought around 2k of the XM68GD 20 rd boxes when PSA was blowing them out at $8 per 20rd box. |
I hated going to weddings. All the grandmas would poke me and say "You're next". They stopped that when I started doing it to them at funerals.
Sic semper evello mortem tyrannis
Sic semper evello mortem tyrannis
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Originally Posted By OlKev: Any new thoughts on the 6.8 vs.6.5? I've been looking at the 6.8 for an upper build but am wondering about availability of barrels, BCG's ammo, reloading components, etc. Is the interest in the 6.8 dying down? @VASCAR2 post after yours sums it up pretty well. As to ammo availability, if you are a reloader, 6.5 Grendel can convert 7.62x39 brass to Grendel, and you can also convert 6mm ARC brass to Grendel (with some effort, beware and research that first on how to do it). As to bullets, you just have to shop. TNT 90's can be had for under 20 cents if you get lucky. I picked up thousands of 129 soft-tips for 13 cents not that long ago. the SMK 107 at Midway is way underpriced, IMHO, right now. With 6.8, the only thing you can convert is the even rarer .224 Valk. As to 6mm ARC, it only shines at distance as a gong-banger, and that's about it. It'll beat Grendel on targets in any wind at even 500 yards, and better as you go further, but you can push Grendel to 1000 if you want to, still. Remind me again why one wants a tiny AR15 rifle for 1000 yard shots again? If I'm doing 1000 yard shots, I'm sending 6.5 Creedmoor. Anyone who is gong-bang shooting 1000 yards, isn't field humping their gear to do it. So run a heavier gun that will be more stable for 1000 yards anyway. Anything you are humping your rifle to, is 6.8 and 6.5 distance. I just prefer 6.5 Grendel because it's pragmatically the same as 6.8 in the hunting range, and then goes farther for gong-shooting and other stuff. As to short-barrels - it's mostly true that 6.8 (full power) is going to be a little better than 6.5, that only much applies with heavy bullets at high pressure, which will also be rainbowing. Whereas Grendel is going to be flatter than 6.8 at short barrel length - even moreso, and still deliver 1000 ft-lb at 100 yards plus. Pinging steal with a 12" BBL 6.5 Grendel at 500 yards using 25 cent Wolf Steel ammo, is pretty cool. I'm not here to crap on 6.8, it's actually a pretty great round, and I think 6.5 Grendel is really pushing it to the edge on what size diameter cartridge should be run in the AR15 platform. But, well, 6.8 lost. 6.5 Grendel does more. Honestly, if they made a 6.8 casing at high pressure with a 6.5 diameter bullet, that would be interesting. But that ship has sailed. Who knows, Horandy's NEW CALIBER OF THE MONTH! Team might release something like that in a few weeks. It's about time in fact. But I dont' run exotics. I waited until 6.5 Creedmoor won the Modern-Take-on-.308-Sized-Guns wars. I actually like .260 better, but so glad I waited. And same for 6.5 Grendel. It won. 6.8 is holding on, and that's great, it's a good round too. 6mm ARC is probably outselling new guns of both those combined right now, but if I'm actually going to hunt anything, I'm never going to pick a 6mmARC over the other 2. |
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Originally Posted By lazyengineer: @VASCAR2 post after yours sums it up pretty well. As to ammo availability, if you are a reloader, 6.5 Grendel can convert 7.62x39 brass to Grendel, and you can also convert 6mm ARC brass to Grendel (with some effort, beware and research that first on how to do it). As to bullets, you just have to shop. TNT 90's can be had for under 20 cents if you get lucky. I picked up thousands of 129 soft-tips for 13 cents not that long ago. the SMK 107 at Midway is way underpriced, IMHO, right now. With 6.8, the only thing you can convert is the even rarer .224 Valk. As to 6mm ARC, it only shines at distance as a gong-banger, and that's about it. It'll beat Grendel on targets in any wind at even 500 yards, and better as you go further, but you can push Grendel to 1000 if you want to, still. Remind me again why one wants a tiny AR15 rifle for 1000 yard shots again? If I'm doing 1000 yard shots, I'm sending 6.5 Creedmoor. Anyone who is gong-bang shooting 1000 yards, isn't field humping their gear to do it. So run a heavier gun that will be more stable for 1000 yards anyway. Anything you are humping your rifle to, is 6.8 and 6.5 distance. I just prefer 6.5 Grendel because it's pragmatically the same as 6.8 in the hunting range, and then goes farther for gong-shooting and other stuff. As to short-barrels - it's mostly true that 6.8 (full power) is going to be a little better than 6.5, that only much applies with heavy bullets at high pressure, which will also be rainbowing. Whereas Grendel is going to be flatter than 6.8 at short barrel length - even moreso, and still deliver 1000 ft-lb at 100 yards plus. Pinging steal with a 12" BBL 6.5 Grendel at 500 yards using 25 cent Wolf Steel ammo, is pretty cool. I'm not here to crap on 6.8, it's actually a pretty great round, and I think 6.5 Grendel is really pushing it to the edge on what size diameter cartridge should be run in the AR15 platform. But, well, it lost. 6.5 Grendel does more. Honestly, if they made a 6.8 casing at high pressure with a 6.5 diameter bullet, that would be interesting. But that ship has sailed. Who knows, Horandy's NEW CALIBER OF THE MONTH! Team might release something like that in a few weeks. It's about time in fact. But I dont' run exotics. I waited until 6.5 Creedmoor won the Modern-Take-on-.308-Sized-Guns wars. I actually like .260 better, but so glad I waited. And same for 6.5 Grendel. It won. 6.8 is holding on, and that's great, it's a good round too. 6mm ARC is probably outselling new guns of both those combined right now, but if I'm actually going to hunt anything, I'm never going to pick a 6mmARC over the other 2. Originally Posted By lazyengineer: Originally Posted By OlKev: Any new thoughts on the 6.8 vs.6.5? I've been looking at the 6.8 for an upper build but am wondering about availability of barrels, BCG's ammo, reloading components, etc. Is the interest in the 6.8 dying down? @VASCAR2 post after yours sums it up pretty well. As to ammo availability, if you are a reloader, 6.5 Grendel can convert 7.62x39 brass to Grendel, and you can also convert 6mm ARC brass to Grendel (with some effort, beware and research that first on how to do it). As to bullets, you just have to shop. TNT 90's can be had for under 20 cents if you get lucky. I picked up thousands of 129 soft-tips for 13 cents not that long ago. the SMK 107 at Midway is way underpriced, IMHO, right now. With 6.8, the only thing you can convert is the even rarer .224 Valk. As to 6mm ARC, it only shines at distance as a gong-banger, and that's about it. It'll beat Grendel on targets in any wind at even 500 yards, and better as you go further, but you can push Grendel to 1000 if you want to, still. Remind me again why one wants a tiny AR15 rifle for 1000 yard shots again? If I'm doing 1000 yard shots, I'm sending 6.5 Creedmoor. Anyone who is gong-bang shooting 1000 yards, isn't field humping their gear to do it. So run a heavier gun that will be more stable for 1000 yards anyway. Anything you are humping your rifle to, is 6.8 and 6.5 distance. I just prefer 6.5 Grendel because it's pragmatically the same as 6.8 in the hunting range, and then goes farther for gong-shooting and other stuff. As to short-barrels - it's mostly true that 6.8 (full power) is going to be a little better than 6.5, that only much applies with heavy bullets at high pressure, which will also be rainbowing. Whereas Grendel is going to be flatter than 6.8 at short barrel length - even moreso, and still deliver 1000 ft-lb at 100 yards plus. Pinging steal with a 12" BBL 6.5 Grendel at 500 yards using 25 cent Wolf Steel ammo, is pretty cool. I'm not here to crap on 6.8, it's actually a pretty great round, and I think 6.5 Grendel is really pushing it to the edge on what size diameter cartridge should be run in the AR15 platform. But, well, it lost. 6.5 Grendel does more. Honestly, if they made a 6.8 casing at high pressure with a 6.5 diameter bullet, that would be interesting. But that ship has sailed. Who knows, Horandy's NEW CALIBER OF THE MONTH! Team might release something like that in a few weeks. It's about time in fact. But I dont' run exotics. I waited until 6.5 Creedmoor won the Modern-Take-on-.308-Sized-Guns wars. I actually like .260 better, but so glad I waited. And same for 6.5 Grendel. It won. 6.8 is holding on, and that's great, it's a good round too. 6mm ARC is probably outselling new guns of both those combined right now, but if I'm actually going to hunt anything, I'm never going to pick a 6mmARC over the other 2. 6mm WOA (6.8 SPC necked down to .243") and 6mm Hagar (6.5 Grendel necked down to .243") have been run in NRA High Power tournaments with the 6mm Hagar winning one tournament at the Nationals. Robert Whitley has a lot of articles posted on the www.accurateshooter.com website regarding AR wildcats. I don't know if he's had health issues, but his website is down. |
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Attached File I'm really digging this Grendel gun suppressed. I've tried the 100-grain V-Max and it groups really well. Surprisingly, this gun likes AAC 123-grain FMJ. |
Why is the sky blue?
What makes the green grass grow?
What makes the green grass grow?
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Originally Posted By borderpatrol: 6mm WOA (6.8 SPC necked down to .243") and 6mm Hagar (6.5 Grendel necked down to .243") have been run in NRA High Power tournaments with the 6mm Hagar winning one tournament at the Nationals. Robert Whitley has a lot of articles posted on the www.accurateshooter.com website regarding AR wildcats. I don't know if he's had health issues, but his website is down. Originally Posted By borderpatrol: Originally Posted By lazyengineer: Originally Posted By OlKev: Any new thoughts on the 6.8 vs.6.5? I've been looking at the 6.8 for an upper build but am wondering about availability of barrels, BCG's ammo, reloading components, etc. Is the interest in the 6.8 dying down? @VASCAR2 post after yours sums it up pretty well. As to ammo availability, if you are a reloader, 6.5 Grendel can convert 7.62x39 brass to Grendel, and you can also convert 6mm ARC brass to Grendel (with some effort, beware and research that first on how to do it). As to bullets, you just have to shop. TNT 90's can be had for under 20 cents if you get lucky. I picked up thousands of 129 soft-tips for 13 cents not that long ago. the SMK 107 at Midway is way underpriced, IMHO, right now. With 6.8, the only thing you can convert is the even rarer .224 Valk. As to 6mm ARC, it only shines at distance as a gong-banger, and that's about it. It'll beat Grendel on targets in any wind at even 500 yards, and better as you go further, but you can push Grendel to 1000 if you want to, still. Remind me again why one wants a tiny AR15 rifle for 1000 yard shots again? If I'm doing 1000 yard shots, I'm sending 6.5 Creedmoor. Anyone who is gong-bang shooting 1000 yards, isn't field humping their gear to do it. So run a heavier gun that will be more stable for 1000 yards anyway. Anything you are humping your rifle to, is 6.8 and 6.5 distance. I just prefer 6.5 Grendel because it's pragmatically the same as 6.8 in the hunting range, and then goes farther for gong-shooting and other stuff. As to short-barrels - it's mostly true that 6.8 (full power) is going to be a little better than 6.5, that only much applies with heavy bullets at high pressure, which will also be rainbowing. Whereas Grendel is going to be flatter than 6.8 at short barrel length - even moreso, and still deliver 1000 ft-lb at 100 yards plus. Pinging steal with a 12" BBL 6.5 Grendel at 500 yards using 25 cent Wolf Steel ammo, is pretty cool. I'm not here to crap on 6.8, it's actually a pretty great round, and I think 6.5 Grendel is really pushing it to the edge on what size diameter cartridge should be run in the AR15 platform. But, well, it lost. 6.5 Grendel does more. Honestly, if they made a 6.8 casing at high pressure with a 6.5 diameter bullet, that would be interesting. But that ship has sailed. Who knows, Horandy's NEW CALIBER OF THE MONTH! Team might release something like that in a few weeks. It's about time in fact. But I dont' run exotics. I waited until 6.5 Creedmoor won the Modern-Take-on-.308-Sized-Guns wars. I actually like .260 better, but so glad I waited. And same for 6.5 Grendel. It won. 6.8 is holding on, and that's great, it's a good round too. 6mm ARC is probably outselling new guns of both those combined right now, but if I'm actually going to hunt anything, I'm never going to pick a 6mmARC over the other 2. 6mm WOA (6.8 SPC necked down to .243") and 6mm Hagar (6.5 Grendel necked down to .243") have been run in NRA High Power tournaments with the 6mm Hagar winning one tournament at the Nationals. Robert Whitley has a lot of articles posted on the www.accurateshooter.com website regarding AR wildcats. I don't know if he's had health issues, but his website is down. 6 Hagar is a spc case that's 45mm long . * Hornady does a run of brass every few years . Creedmoor Sports sells it |
6.8SPC or 6.5G? Which one should I buy? (Page 14 of 14)
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