6.5 creedmoor ar10

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Gtscotty said:
Why don't you respect the OP's wishes instead of trying to stir the pot. If you want a .260, go buy one, that's not what this thread is about.
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well he is not having any luck with the creed is he? would you tell him to double down?
 
salt&battery said:
well he is not having any luck with the creed is he? would you tell him to double down?
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By not having luck, I assume you mean the one out of spec part he got? Rediculous.

If you don't have anything on topic and of value to add to this thread, stop polluting it with your childish troll posts. From your posts it's pretty clear that the OP has more experience with the Creedmoor, and I'd venture 6.5's in general than you do, he doesn't need your unsolicited jeers towards another cartridge. Some of us are genuinely interested in the thread subject and don't want to have to sort through your ignorant, snide posts to find the meat.
 
Pretty obvious illogical construction to use a headspace issue as evidence of a feeding problem with steep shoulder cartridges in AR-10's...

Incorrect headspace between his bolt, barrel, and extension would not have been any different if it said .260rem or even .308win on the side of the barrel. Out of spec parts - or mis-matching spec parts - are not a factor of cartridge choice; @salt&battery's argument is non sequitur.
 
Gtscotty said:
By not having luck, I assume you mean the one out of spec part he got? Rediculous.

If you don't have anything on topic and of value to add to this thread, stop polluting it with your childish troll posts. From your posts it's pretty clear that the OP has more experience with the Creedmoor, and I'd venture 6.5's in general than you do, he doesn't need your unsolicited jeers towards another cartridge. Some of us are genuinely interested in the thread subject and don't want to have to sort through your ignorant, snide posts to find the meat.
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wise guy what did you add to the topic? the guy was having trouble and I have found the 260 being a necked down 308 would be easier feeding so being he had to send the barrel and bolt back figured he might try the 260. I guess my comment about eyeliner really got to you.. I have shot the 260 for 15 years.
 
salt&battery said:
wise guy what did you add to the topic? the guy was having trouble and I have found the 260 being a necked down 308 would be easier feeding so being he had to send the barrel and bolt back figured he might try the 260. I guess my comment about eyeliner really got to you.. I have shot the 260 for 15 years.
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Wise guy? Lol, ok. He wasn't having trouble when you posted this helpful gem.

salt&battery said:
how can that be? the creed is the best designed round in the history of the world. how can the useless 260 be better?
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He was asking for advice on specific parts and suggested ammo types for the new rifle he's building. Even now, he just got a faulty part, which obviously could happen with anything at all you might buy parts for. I really make an effort not to get pulled into online hog waiving contests with trolls like you, but THR is supposed to be focused on a higher level of discourse and posts like yours in this thread are pulling it down. Surely you can do better, if you don't have something on topic and constructive to post, move along to another thread.

If you have suggestions on buffers, gas blocks, Creed ammo, the things the OP is asking about, or if you are like me and think you might want to build something similar, and are interested to see what the OP does, then this thread's the place to be. If you want to talk about how great the .260 is start your own thread and have at it, it's that simple.
 
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Farmerboy, for factory ammo you might want to try "Prime Ammo". Their prices are very reasonable for match quality ammo. I can't say how it will shoot in your barrel, but it shoots very well in my two bolt action CM. Remarkably well.
 
Gtscotty said:
Wise guy? Lol, ok. He wasn't having trouble when you posted this helpful gem.



He was asking for advice on specific parts and suggested ammo types for the new rifle he's building. Even now, he just got a faulty part, which obviously could happen with anything at all you might buy parts for. I really make an effort not to get pulled into online hog waiving contests with trolls like you, but THR is supposed to be focused on a higher level of discourse and posts like yours in this thread are pulling it down. Surely you can do better, if you don't have something on topic and constructive to post, move along to another thread.

If you have suggestions on buffers, gas blocks, Creed ammo, the things the OP is asking about, or if you are like me and think you might want to build something similar, and are interested to see what the OP does, then this thread's the place to be. If you want to talk about how great the .260 is start your own thread and have at it, it's that simple.
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if I started a thread about the 260 I would be told the microscopic differences between the 2 rounds makes the creed so much better. what I said was a joke and one guy thought it was funny. if any one wants an AR creedmoor best thing is to get the upper from black hole or aero precision for $625-699. have to use your bolt and maybe if you talk with them might be able to send your bolt to them to make sure it fits the upper before they send it out. as far as the buffer I would think a 308 with a 147 grain bullet and a 6.5 with a 140 grain bullet going at almost the same speed the 308 buffer would do just fine
 
I am looking at the prime ammo, have heard great things about it. As for right now I bought a case of the Winchester 140gr match ammo.
 
farmerboy78 said:
I am looking at the prime ammo, have heard great things about it. As for right now I bought a case of the Winchester 140gr match ammo.
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but do you have your rifle assembled yet? if so what are the details? have you any intention of reloading?
 
No, it's not assembled yet. Rainier received the barrel yesterday and should be get back to me in a few days with an answer.
 
Well, I received my response today... supposedly the chamber throat wasn't quite long enough... so they are going to re-throat the barrel and get it back to me... to date, i began with a cmmg mk3 carbine that has a 2stage trigger, 22" rainier ultra match shillen ratchet rifling 6.5 creedmoor barrel, hogue grip, Luth mba3 stock, cmmg keymod 15" forearm, jp 308 silent capture, will have a superlative venting gas block and a rainier ultra match high pressure bcg shipped back with the barrel... im disappointed that it is a chamber issue, hope to have it running within a month...
 
Do any of you have experience with the rainier ultramatch barrels? Curious what kind of accuracy to expect?
 
farmerboy78 said:
Well, I received my response today... supposedly the chamber throat wasn't quite long enough... so they are going to re-throat the barrel and get it back to me... to date, i began with a cmmg mk3 carbine that has a 2stage trigger, 22" rainier ultra match shillen ratchet rifling 6.5 creedmoor barrel, hogue grip, Luth mba3 stock, cmmg keymod 15" forearm, jp 308 silent capture, will have a superlative venting gas block and a rainier ultra match high pressure bcg shipped back with the barrel... im disappointed that it is a chamber issue, hope to have it running within a month...
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well that is what you get for buying a cheap barrel. oops that was an expensive barrel. you get what you pay for. isn't that the way it is supposed to be?
 
Well they called again, upon further inspection, there was supposedly debris in the chamber/shoulder area that prevented proper headspace... clean it out and double checked headspace, it's now on it's way back to me... hope to get it together this weekend and begin tuning the gas block...
 
farmerboy78 said:
Well they called again, upon further inspection, there was supposedly debris in the chamber/shoulder area that prevented proper headspace... clean it out and double checked headspace, it's now on it's way back to me... hope to get it together this weekend and begin tuning the gas block...
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this is easy to say afterwards but usually even with shotguns if have chambering problems first thing is to clean the chamber. I have used a slow rpm drill and the right size brush then wrap it in steel wool
 
salt&battery said:
this is easy to say afterwards but usually even with shotguns if have chambering problems first thing is to clean the chamber. I have used a slow rpm drill and the right size brush then wrap it in steel wool
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I've had to do this once with a new rifle. The test shots from the factory left fowling in a tight chamber and factory ammo wouldn't fit. A little steel wool on a drill arbor and it worked great. On a side note, I'd like to see a thread on real world comparisons of creedmoor and 260 rifles, both semi auto and bolt guns. The slightly shorter case of the cm should make it fit mags a bit better, but it goes back and forth a LOT on the Internet...
 
According to Chuck Hawks, feeding issues would be the downfall of the WSM's, didn't happen. Due to case dimensions the 6.5 CM theoretically won't feed as well as the .260. I haven't read about issues with it feeding in AR's. I kind of like the .260 better but due to the ability to load longer bullets without intruding as much on powder space I would rather have a 6.5 CM in an AR or bolt action.
 
Well here she is all together. Fire functions perfectly, but I will work on tweaking the gas block. Just waiting on the keymod picatinny rail to mount my bipod. After that, I'm going to try and shoot some groups with the Winchester match.
 

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Are the dings on the neck normal? Will gas block adjustments help take it out?
 

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farmerboy78 said:
Well, I picked up this carbine today and installed the Hogue grip and the Louth mba-3 stock... I'm awaiting my barrel and I'm trying to figure out what gas block I want to put on the barrel. I am looking at 3 different ones; the paladin machine, the white oak, and the superlative... someone help me out here
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I'm partial to SLR Rifleworks adjustable gas blocks. It's a detent style that takes down for easy cleaning if needed.
 
farmerboy78 said:
Are the dings on the neck normal? Will gas block adjustments help take it out?
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I've seen marks just like that on .223 case necks before. Maybe the ejector is pushing the case neck into a sharp edge somewhere on the lug recesses or ejection port during ejection? It looks too sharp to be from the brass deflector... I'm sure an AR expert will be by shortly to render a more useful diagnosis.
 
Well, here are my first shots to get my optic zeroed before I take it long distance... there are 3 groups on the 1st plate, walking it in and 1 group on the 2nd in the bull... this was only @ 50yds for zero with the Winchester match ammo... for box ammo, it's a good start and I almost can't wait til my high pressure bcg comes in so I can handload, and really wring out as much velocity and accuracy as possible... I picked up several hundred 120gr smk that I will for my grendel and begin with for this rifle...
 

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Well, I took the rifle to my range today and shot out to 810yds with the Winchester match ammo. The rifle seems to shoot well, but the ammo isn't consistent enough for beyond 500yds. By looking at the case heads on the brass, you can tell there's a huge velocity spread. I even had one primer fall out after firing the round. Half the cases had ejector wipes. I like the rifle and Louth the ammo. But i did find a shortcoming with the rifle, the 2stage cmmg trigger is way too heavy for long range shooting. I'm considering picking up a geiselle high speed national match like I have in my 6.5 grendel ar. Or, maybe even a jard.
 
Neck marks look like excessive ejector pressure and a barrel extension which needs "melted". An AGB might only slightly help that issue, but the solution is really to balance your ejector and dehorn the lugs on the port side of the extension. Less gas will help with your CHS, adding some carrier or buffer weight may help too - but the AGB is the best path.

I'd never drill a hole in the side of any of my bolt gun barrels (which didn't yield compensating benefits), so I'm not a fan of off-bleed gas blocks either.
 
Varminterror said:
Neck marks look like excessive ejector pressure and a barrel extension which needs "melted". An AGB might only slightly help that issue, but the solution is really to balance your ejector and dehorn the lugs on the port side of the extension. Less gas will help with your CHS, adding some carrier or buffer weight may help too - but the AGB is the best path.

I'd never drill a hole in the side of any of my bolt gun barrels (which didn't yield compensating benefits), so I'm not a fan of off-bleed gas blocks either.
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Well, this agb will also restrict gas like Any other if I just run it in further... may try that next...
 
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