More Barrel Life with 6.5 Creedmore vs .260???

[alman1531]

I have read that the 6.5 Creedmore has better barrel life than the .260 If this is true, can anyone please tell me how much and why this is. Is it the sharper shoulder angle, preasure levels, voodo black magic? I am going to eventually get a 2nd barrel for either the 6.5 Creedmore or the .260 Remington for my new AX308. I am leaning toward the .260 because it has a small bit more case capacity than 6.5C and it seems more manufactures make the brass and factory loadings for it. What are your thoughts toward this based on your experience behind the trigger?

 

[redneckbmxer24]

Barrel life is probably going to depend more on how hard you push them rather than the individual cartridges.

I was in the same boat this week and wanted a 260 because I already had H4831 which works a better with 260 than 6.5CM. H4350 is impossible to find. The deciding factor was that AINA didn't have any 26" 260 barrels but did have a 26" 6.5CM. In hide sight I probably still should have bought the 24" 260 because the H4831 still would have worked better. It's a little late now though. 260 also has Lapua brass which blows Hornady out of the water.

 

[BozFour]

Barrel life is probably going to depend more on how hard you push them rather than the individual cartridges.

I was in the same boat this week and wanted a 260 because I already had H4831 which works a better with 260 than 6.5CM. H4350 is impossible to find. The deciding factor was that AINA didn't have any 26" 260 barrels but did have a 26" 6.5CM. In hide sight I probably still should have bought the 24" 260 because the H4831 still would have worked better. It's a little late now though. 260 also has Lapua brass which blows Hornady out of the water.

I use lapua scenar for 6.5.

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[Shoalwater]

Barrel life is probably a toss up at best, as mentioned, really depends how hard you push it. That being said, I would go with a 6.5 CM if you plan on running it on a short action through AICS magazines. You will be able to load to mag length and not have the bullet taking up case capacity. The Hornady brass does leave a little something to be desired if you push it very hard, however, the Nosler brass is holding up much better. If you load both cartridges to AICS mag length (2.880" IIRC) you should get a little more velocity out of the 6.5 CM than the 260, due to the bullet not taking up case capacity. 6.5 CM on a short action being mag feed, 260 on long action or single load on short action, that is how I would decide.

 

[6Dasher]

The 260 has more case volume, so any room the bullet takes still means it has the same, or more case capacity than the cm. The issue with the 260 is that on long bullets you need to push them beyond the neck-shoulder junction which can give erratic neck tensions.

If barrellife is an issue, best not use 6.5 or smaller when you are used to a 308. The 260/CM/Creed/6.5x47 don't have a lot between them. Using mild loads of a single based powder in the 260 will give more barrel life than max pressure and double based powders in a 6.5x47.

I'd consider the point of not sticking the bullet near or through the neck junction as having more importance than a little bit of extra barrel life. As the magazine is the limiting factor, use what is best.

 

[redneckbmxer24]

With AW, AX (rifle not AICS), and AICS mags with the plate removed you can load 260 with the base of the bearing surface at the base of the neck and still have plenty of room in the case. More room than with the creedmoor.

 

[Sniper260]

I run a 260 tactical chamber to seat 140 great bergers right... I full expect to have a long barrel life with it... The 260 and 65 creed aren't blazing fast 2900 for plus rounds anyways... I wouldn't worry about barrel life. It's going to be about as normal is normal is...

6.5x284 however will burn out the throats quick.

 

[Wild Geese 1]

Go with a .260

 

[KentuckyWindage]

I have read that the 6.5 Creedmore has better barrel life than the .260 If this is true, can anyone please tell me how much and why this is. Is it the sharper shoulder angle, preasure levels, voodo black magic? I am going to eventually get a 2nd barrel for either the 6.5 Creedmore or the .260 Remington for my new AX308. I am leaning toward the .260 because it has a small bit more case capacity than 6.5C and it seems more manufactures make the brass and factory loadings for it. What are your thoughts toward this based on your experience behind the trigger?

I have heard, the sharper shoulder angle of the creedmoor keeps more of the initial powder combustion inside the case, where as the 260's ramp like shoulder allows the combustion to move more into the throat area causing somewhat faster erosion. That being said, I have no experience with a .260, nor do I even necessarily believe it, it is just what I have been told.

Edit: and yeah, do the .260. More CM stuff for me.

 

[6Dasher]

Everywhere you look on the net, it's always "heard" or "he said" when you read stories about the turbulence point in the neck. I think the guy that posed that first question also mentioned it was a question he had, not a claim of something being true. The story got it's own life after that without anyone ever quantifying the influence of the sharper shoudler angle. Nothing has ever proven that a sharper shoulder angle increases barrel life, pretty much like using moly. If it had, everyone would be making 45° shoulder on their new match cases (hunting and tactical will always prefer a lower angle for feeding reliability).

 

[0311@LAR]

I just re barreled my .260 that had a Krieger remmy varmint contour on it. The barrel had been melonited, which I thought would make it last a long time. It had 2200 + rounds on it when we yanked it off. It was completely shot out, which explained why it didn't seem consistent at distance anymore. Replaced it with a Bartlein heavy varmint contour and it hammers again. Biggest thing I learned was not to try and keep squeezing life out of a shot out barrel. They are like tires, just replace them when they are worn out.

 

[alman1531]

I think that I will be getting the .260 Remington over the 6.5 Creedmore because it seems that they have equal performance; the .260 is just logistically superior at this point with more people making ammo and components for it.

 

[kurt]

I think that I will be getting the .260 Remington over the 6.5 Creedmore because it seems that they have equal performance; the .260 is just logistically superior at this point with more people making ammo and components for it.

laupa brass is about the only component that you cant get for the cm but loaded ammo seems the cm is much more available.

 

[sib1948]

Barrel life is probably going to depend more on how hard you push them rather than the individual cartridges.

I was in the same boat this week and wanted a 260 because I already had H4831 which works a better with 260 than 6.5CM. H4350 is impossible to find. The deciding factor was that AINA didn't have any 26" 260 barrels but did have a 26" 6.5CM. In hide sight I probably still should have bought the 24" 260 because the H4831 still would have worked better. It's a little late now though. 260 also has Lapua brass which blows Hornady out of the water.

I have found the Nosler brass works better than Lapua brass in in my 26" DTA barrels. Mouth is already camphered and deburred as is the flash hole. More expensive at $66 per hundred, but on 10th reloading without any problems. I anneal and full length size after every 3 firings. With 139gr Lapua BTHP getting 2960 fps with 43.3gr of H4350!

 

[The Gump]

I would not worry about barrel life as much as being able to Chase the lands once you start wearing your barrel. With .260 you have one OAL to choose from. That is 2.780. With .260 and one OAL you will loose accuracy because you can not chase the lands due to the fact you're limited by the length the magazine offers.

 

[alman1531]

I would not worry about barrel life as much as being able to Chase the lands once you start wearing your barrel. With .260 you have one OAL to choose from. That is 2.780. With .260 and one OAL you will loose accuracy because you can not chase the lands due to the fact you're limited by the length the magazine offers.

Just curious as to how much real world impact that would have on the accuracy? I am not looking to shoot bench rest.

 

[redneckbmxer24]

I would not worry about barrel life as much as being able to Chase the lands once you start wearing your barrel. With .260 you have one OAL to choose from. That is 2.780. With .260 and one OAL you will loose accuracy because you can not chase the lands due to the fact you're limited by the length the magazine offers.

What mags are you using that you can't go over 2.780? Even a standard bottom metal configuration typically allows 2.80 or better. A unmodified AICS mag gets you about 2.850 and a modified one even more.

 

[XTREM HTR16]

Tag


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[The Gump]

What mags are you using that you can't go over 2.780? Even a standard bottom metal configuration typically allows 2.80 or better. A unmodified AICS mag gets you about 2.850 and a modified one even more.

You're correct. I thought I was in the semi-auto section.

Just curious as to how much real world impact that would have on the accuracy? I am not looking to shoot bench rest.

I would say it depends on the bullet being used. Bullets with long bearing surfaces like AMAX's should be more forgiving than bullets with shorter bearing surfaces like Berger VLD's. I ran my .260 to 3K rounds with 142 SMK's and 140 AMAX's but I chased the lands. I started out at 2.780 and now I'm around 2.890. I set the chamber back so now it's back to 2.780. There may be someone else who can provide some input.?

 

[The Gump]

Also, I lost velocity at ~2000rds. Way before accuracy fell. When the barrel was new I could hit 2850 with 43.5gr of H4350. I had to load it to 44.5gr of H4350 just to get 2735 shortly after I noticed I lost velocity. So I guess you have to ask yourself what you consider shot out. Me personally, If it's for a match I would consider it shot when it looses velocity. So to me there is no noticeable difference in barrel life between .260 and 6.5 Creedmoor and I would not set that barrel back for the purpose of shooting matches since it will never regain velocity. They are ballistically equivalent.

Edit: I have also heard that the shoulder on the Creedmoor aid in barrel life as well. I don't know how much truth there is to that. I have never compared and contrasted. That being said, I have also heard it make the cartridge less finicky to load for and the accuracy nodes are wider. Again, don't know how much truth there is to that either. I have a 6MM Creedmoor on order. I guess we will see about those nodes.

 

[Greg Langelius *]

My 28" L-W Stainless .260 barrel has been sidelined while the action is doing match duty as a .30BR. Before I swapped it out, I measured throat migration and spoke with L-W about expected barrel life. They projected that to be around 2400rd overall. My loads were running 140A-Max and 142SMK's at around 2800-2850fps.

My .260 craving is currently being supported by a factory standard 24" Savage 10 Predator Hunter Max 1.

For me, the CM has an advantage that allows long bullets to feed better from the mag.

Conversely, the .260 has slightly (significantly?) more case capacity, my rifle is set up as a single shot so magazine feeding isn't an issue, and in these days of unreliable components availability, being able to make .260 casings from .243 and 7-08 brass may be an advantage.

Greg

 

[Frank Green]

I say barrel life will be a wash between the two.

To many factors with the case capacity being so close.

Bullets with a longer bearing surface are going to wear the barrels faster, type of powder being used, how it's being shot, how it's being cleaned etc...

The only reason I did a .260 Rem. was more brass options out there and that's the only reason. Jeff and Tracy here had 6.5CM just recently built by SAC.

Later, Frank
Bartlein Barrels

 

[verdugo60]

Yep, for me I'm interested in trying the 6.5 CM match ammo from Hornady. The OP seems to think there are more .260 offerings as far as components/loaded ammo. For components (brass) that may be true with Lapua 260 brass which is excellent. As far as loaded ammo though, the 6.5 CM has cheaper MATCH ammo by $10 per box of 20. I don't even bother with shooting non-match ammo, and I loaded for my 260.

Really if you reload it's a toss up. For me the option of factory match for 308 prices swayed me to 6.5 CM but I loved my 260.

 

[VKC]

More Barrel Life with 6.5 Creedmore vs .260???

I went with a 6.5 Creedmoor because I have that caliber in both a bolt and semiauto. Initially there were problems with some semiautos feeding 260rems reliably, but I don't think that is an issue anymore. For me I buy loaded ammo when I can't find components and then reload with the fired brass, so 6.5cm makes sense. I also don't worry if I loss brass as it is cheaper but still high quality and more than accurate enough.


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[Bigchaza]

Just get whatever calibre you want and then melanite or salt bath nitride the barrel, it gives you thice the barrel length and 5% free fps, i think mine cost 120 to get a bartlien barrel done so in my mind thats quiet equitable and i love the tough black finish it leaves.