6.5 Creedmoor vs .260 Primer Pockets?

[libertyman777]

The die is cast concerning my build. It is a 6.5 CM. But I almost went .260 Rem as my smith had a reamer for it as well.

I realize that the .260 is easier to form brass and that the 6.5 CM has great factory ammo.

I had heard some time ago that .260 brass from some manufacturer had a problem with loose primer pockets, but that was corrected.

I've been reading some additional posts about the 6.5 CM and there are a few complaints about loose primer pockets as well, although not near as many as were complaining about the .260 a few years back.

What's the word?

 

[Rthur]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

I haven't had a problem with loose pockets, running rem 260 brass. That said 4-5 loads running a warm load I would expect to loose some brass.

BTW there are several choices for the 260 and only one for the creed. As brass has been becoming a problem to get for some calibers this may be something to take into consideration.

 

[libertyman777]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rthur</div><div class="ubbcode-body">I haven't had a problem with loose pockets, running rem 260 brass. That said 4-5 loads running a warm load I would expect to loose some brass.

BTW there are several choices for the 260 and only one for the creed. As brass has been becoming a problem to get for some calibers this may be something to take into consideration. </div></div>

I chose the 6.5 CM over the 6.5x47 for that very reason, but it's already built so I'm gonna shoot it out. I understand that CM brass can be formed out of 22-250 with some work.

My buddy has several reloads on his CM brass and reports no loose pockets as well.

What causes loose pockets? Metallurgy or design? Running it too hot?

 

[Hawk45]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

Anytime you max out anything, you are going to wear out parts faster. Reasonable loads will allow things to last longer. But if you feel the need to push things to the max, they make more brass for that reason. Enjoy your CM you can't go wrong with any of them.

 

[leadbullet]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

I have run lapua and remy factory 260 brass and many winchester 243 fireformed cases and nevr lost a case due to pocket loosening but i run at 95% max so this is a non issue for me and not a good reason to go with the creedmoor instead, lack of reloading equipment would though.
I have a 6.5 creedmoor project going on an Armalite AR10 platform though because that is where the creedmoor shines over the 260 the most. in a bolt gun the dif is marginal.

 

[libertyman777]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

Thanks for the input. I too normally don't run anything at max unless it's just the only place it will perform.

 

[JFComfort]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

If you have some that are getting a little loose stick a Wolf LR primer in there!

 

[ctressler]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

The creedmoor loose primer pockets were only a problem with some of the earlier Hornady/Creedmoor brass, it shouldn't be a problem anymore.

 

[coldboremiracle]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: libertyman777</div><div class="ubbcode-body"> I understand that CM brass can be formed out of 22-250 with some work.
</div></div>
Are you sure about that? I thought it was the other way around. X47 brass from 22-250, isn't the 250 too short to make a CM?

 

[RottenII]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

I'm currently on the 10th reloading of my lot of Hornady brass. Primer pockets are still snug. My loads run H4350 from 42-42.4grs.

 

[libertyman777]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ColdBoreMiracle</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: libertyman777</div><div class="ubbcode-body"> I understand that CM brass can be formed out of 22-250 with some work.
</div></div>
Are you sure about that? I thought it was the other way around. X47 brass from 22-250, isn't the 250 too short to make a CM? </div></div>

I may have gotten that confused. Is there nothing that can be formed into 6.5 CM?

 

[ctressler]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: libertyman777</div><div class="ubbcode-body">I may have gotten that confused. Is there nothing that can be formed into 6.5 CM? </div></div>

You can search the forum for an answer to this, but 243 and 308 come to mind as well as the Creedmoor parent case, the 30 TC.

 

[mattsnuked]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

I have formed 6.5 Creedmoor from 308 brass a long time ago, it can be done but you will definitely need to turn the necks. It takes a bit of time.

 

[ctressler]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RottenII</div><div class="ubbcode-body">I'm currently on the 10th reloading of my lot of Hornady brass. Primer pockets are still snug. My loads run H4350 from 42-42.4grs. </div></div>

This should tell you everything you need to know. I really don't think you will have any problems with Hornady brass. Matt had to make Creedmoor brass out of 308 brass because Hornady was slow to produce it, but now the market is flooded with 6.5 creedmoor brass with no primer pocket issues.

I feel like a Hornady salesman right now

 

[dar1246]

Re: 6.5 Creedmoor vs .260 Primer Pockets?

On my 260s and Creedmoor the primer pocket do get loose. The 260 is around 3-4 reloads. The Creedmoor is around 2-4 reloads. I run the loads hot. If you are just loading mild loads they will be just fine. I have 5 260s and have shot around 40000 rounds of them. they will get loose on hot loads. I have only shot the Creeedmoor around 1000 rounds. I loose around 15% of the brass after the 3 firing.
On my 6.5x47s I have. The brass last a lot longer. I have shot Both the 47s around 500 rounds and still loading the same brass.

I load for four shooters. I don't know what everyone has experience. But I do know what the results from my loads are.