6.5 Creedmoor VS. .260 Rem

#51
Re: 6.5 Creedmoor VS. .260 Rem

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jeffersonv</div><div class="ubbcode-body">
This option for better brass isn't there with the Creedmoor.

</div></div>

That's because it isn't needed as you have excellent Hornady brass already.

Ballistics are almost identical so the velocities with shorter barrels will be also. I wouldn't go below 24" with either though. Better to not have to bump up pressure to keep velocity there. A few inches less barrel isn't worth it.
 
#53
Re: 6.5 Creedmoor VS. .260 Rem

Life is full of give and takes. You don't get something for nothing. You want a shorter barrel with a can? Then you will give up some velocity to longer barrels. You want a longer barrel for max velocity? Then you will give up the use of a can.

You want it to be quieter than you have to play the give and take game. Personally, I would rather have a 28" barrel and get max velocity at lower pressures than have a 20" barrel and an 8" can and still have the same length hanging off the front of the rifle but have to bump up the pressure to get the velocity but it's up to the end user what they want.

You can always put a can on a 24" barrel too. A well known shooter runs a 26" 300WM with a can hanging off the end and he has no problem getting around matches and doing quite well in them as well.
 
#54
Re: 6.5 Creedmoor VS. .260 Rem

I've been shooting a 22" 260 Remington with a Jet 308 suppressor for a while.

43.5gr of H4350 with Win 7mm/08 brass and 139gr Scenar. Right @ 2800fps.

It's a pretty awesome combination, but it is a little tough on brass. I'm going to see if I can get the same velocity with less pressure with RL17.

I've also loaded up a few rounds with 43.0gr of H4350 for some additional testing.

I don't feel like I'm giving up too much to the guys with 28" barrels shooting @ 2850fps.
 
#56
Re: 6.5 Creedmoor VS. .260 Rem

Also Michael you have 2" more length out infront of the rifle than a 28" barrel. You just chose to have it quieter. That's fine as it's your choice. Like I said, give and takes.
 
#57
Re: 6.5 Creedmoor VS. .260 Rem

6.5 Creedmoor is looking real good to me. Hornady factory 140 Amax is awesome ammo as far as accuracy. I am running 142 SMK at 2950 fps with RL17 and no signs of pressure. BTW, that load shoots 1/4 MOA.
I tried the Berger 130 VLD with 44.5 H4350 Wednesday and got just over 3000 fps. Again no pressure or shiny case heads. Accuracy is outstanding.
Thanks to JRose for the help on load data.
My 260 GAP is just about toast and will get rebarreled to 308 soon.
 
#59
Re: 6.5 Creedmoor VS. .260 Rem

Thanks for the replies guys.
In keeping with the .260 vs 6.5 Creedmoor theme, I have more questions that would figure in to distinguish possible differences between these 2 seemingly very alike cartridges.

Hornady brass is excellent? I hear mixed reviews on this. Is it on par with Nosler?

Also, just to make sure I understand, there is no advantage to the .260 with say a 24" barrel? I understand I can stoke up either cartridge and reduce barrel life. That's just not a good way to go IMO. Too many potential problems for this type of rifle. That's why I have ruled out the 6.5x47. At least for today...

Also, what kind of velocity should I be looking for to reliably hit at 1K in a 140 grn?

Hopefully there are no stupid questions, right?

Thanks again,

Jeff


 
#61
Re: 6.5 Creedmoor VS. .260 Rem

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jeffersonv</div><div class="ubbcode-body">Thanks for the replies guys.
In keeping with the .260 vs 6.5 Creedmoor theme, I have more questions that would figure in to distinguish possible differences between these 2 seemingly very alike cartridges.

Hornady brass is excellent? I hear mixed reviews on this. Is it on par with Nosler?

Also, just to make sure I understand, there is no advantage to the .260 with say a 24" barrel? I understand I can stoke up either cartridge and reduce barrel life. That's just not a good way to go IMO. Too many potential problems for this type of rifle. That's why I have ruled out the 6.5x47. At least for today...

Also, what kind of velocity should I be looking for to reliably hit at 1K in a 140 grn?

Hopefully there are no stupid questions, right?

Thanks again,

Jeff


</div></div>

Jeff,

Capacity of the 260 v the 6.5 Creedmoor is about 2 grains difference in favor of the 260. Once 140 grain bullets are loaded in both, this advantage for the 260 drops to about .7 grains. So not enough to be significant.

I not sure if Hornady brass is "better" than Nosler brass, but Hornady brass is very good. Since Nosler brass is generally more than $1.00 a piece, and Hornady 6.5 Creedmoor brass is about $20. cheaper per 50 cases, I can live with "very good".

Running a JBM table on a 140 A-Max (litz) @ 2700 FPS, yields 9.4 Mils of drop and 1384 FPS @ 1K. Those velocities should be possible in either a 260 or 6.5 Creedmoor, with a short 22" barrel without straining. If you use a 24-26"" barrel 2800 FPS in either should be achievable at sane pressures.

2800 FPS yields 8.6 mils of drop, and 1456 FPS @ 1K.
 
#62
Re: 6.5 Creedmoor VS. .260 Rem

Thanks BobinNC,

That pretty much sums up what I was after.
Now leaning back to the 6.5 Creedmoor, again.

Maybe I should have just picked a 243 or something simple. Barrel is already done though.

Jrose, Because of the smaller case capacity of the 6.5x47, you have to run hotter loads to keep up with the larger capacity cases. At lease that's my understanding.
To me this means shorter brass life, shorter barrel life, fewer accurate load combos, etc.
Not that I'm anti 6.5x47. I'm pretty much pro rifle.
 
#63
Re: 6.5 Creedmoor VS. .260 Rem

I disagree. Look closely at the case dimensions of all three, you'll see them so close that I wouldn't find any of them to be a handicap over the other. I think it really comes down to which brass you want, or if your looking for a slightly shorter case to fit into a mag constraint.

Just my opinion.
 
#64
Re: 6.5 Creedmoor VS. .260 Rem

...from what I have been reading here, the 6.5x47 may well be the most inheretly accurate of the three new 6.5's in question, and is the most comfortable fit in a short action as well...

...it would seem to have the best made and strongest brass of the three as well, which would mitigate the disadvantages of somewhat higher pressures, should some one find such loadings nessesary...

...the small rifle primer is a turn off for some....

 
#65
Re: 6.5 Creedmoor VS. .260 Rem

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: OutRider</div><div class="ubbcode-body">...from what I have been reading here, the 6.5x47 may well be the most inheretly accurate of the three new 6.5's in question
</div></div>

I agree with everything you say but that... What about that slight case dimension change would make it inherently more accurate?

If I launch a 139 gr bullet out of 3 rifles built in all three calibers, using exact same parts, at the exact same velocity, they will do the exact same thing...
 
#67
Re: 6.5 Creedmoor VS. .260 Rem

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JRose</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: OutRider</div><div class="ubbcode-body">...from what I have been reading here, the 6.5x47 may well be the most inheretly accurate of the three new 6.5's in question
</div></div>

I agree with everything you say but that... What about that slight case dimension change would make it inherently more accurate?</div></div>

I think this alludes to the short / fat powder column and efficiency / balance of such case designs. Take for example the PPC and BR case dimensions. 6PPC is arguably the most inherently accurate cartridge of all time (in the realm of 100 to 200 yard group shooting).
 
#68
Re: 6.5 Creedmoor VS. .260 Rem

Doesn't the 6.5x47 take a smaller primer?
Edit: Oh yeah, Outrider got that one.
I was unaware that it had the same case capacity.
I could have sworn I read in Zak Smith's 6.5mm Shootout article that the 6.5 Creedmoor and the .260 were very close but that the 6.5x47 was trailing in that area?
I'll have to study up on that again!
I like the shorter case to fit in the magazine.
Again, how do they do that without loosing case capacity?
It sure looks smaller.

OK, this just in from the 6.5mm Shootout article re: 6.5x47

Cons

* Smaller case than .260 limited powder volume
* To achieve same ballistics as 260, needs to run at high pressure
* Factory ammunition 100-150 fps slower than same bullets in .260 Remington

I DO NOT have experience shooting the 6.5x47. Maybe I'm missing something?

Thanks again guys. It's really a privelege to learn from you.
 
#69
Re: 6.5 Creedmoor VS. .260 Rem

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: The Etruscan</div><div class="ubbcode-body">This thread is further evidence you can't go wrong with any of these 3 cartridges. And I want one. </div></div>
I have one of each.
I have shot the GAP 260 some for about a year and a half. I only have 500 yds range. It has accounted for a few match wins.
The 6.5 Creedmoor was built by Dave at APA. It is a Badger action and Bartlien barrel. I have been working with it now for about a month when I have time. This rifle is proving to be an absolute hammer! It has shot every load well and many groups under .2" @ 100 yds. The first match I shot with it was also my first 500 yd F-Class. My first 20 shots, using the factory 140 load, were inside 4" (mostly inside 3 1/2") from a bipod prone position.
The 6.5x47L is on a R700 action with Krieger barrel. I have fired only 2- rounds thru it, so have really no indication of what it will do.
So far, all having this many 6.5 guns has done is confuse the hell out of me! BUT, I love the 6.5 Creedmoor! BTW, Hornady brass is not a step down.
 
#71
Re: 6.5 Creedmoor VS. .260 Rem

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MinorDamage</div><div class="ubbcode-body">mclevela,

I see you have 11 posts. Please use the search function. Here is a post, damn near exact title (round names are transposed) with three pages of discussion.

Link

Josh </div></div>

...not fer nuthin, but this thread has legs...

...it looks like we may see <span style="font-style: italic">another </span>three pages of fresh 6.5 disscussion...

...don't hafta open the thread if the subject is not of interest to you...
 
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