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Old January 29, 2013, 11:23 AM   #1
precision_shooter
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6 Norma BR vs 6.5x284 vs 6.5 Creedmore vs 260 Remington

Looking at getting another target rifle and I see that Savage chambers most of their target rifles in these calibers in addition to .308. I have a model 10FCP in .308 so I'm looking for another caliber and don't know much about these 4.

What are the differences/similarities?

Advantages of one over the other?

Source for factory loaded ammo or are these pretty much a handloaders cartridge?

Any help or insight you have from experience or credible sources is much appreciated!

Thanks,
P_S
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Old January 29, 2013, 11:39 AM   #2
coldbeer
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I've always been intrigued by those 6.5 mm bullets and their high bullet coefficients.
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Old January 29, 2013, 12:17 PM   #3
Geo_Erudite
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I own a Savage model 16 fcss in 6.5 Creedmoor and I love it.

The cartridge itself was designed off the .30 T/C, which is a shortened .308. It has a 30 degree shoulder, and the body has less of a taper compared to .260 or .308. The shortened length of the case is what makes this cartridge excel when it comes to the longer 140+ grain bullets. The shortened case allows these longer bullets to be seated with less intrusion into the case compared to the .260. When you subtract bullet intrusion from the .260's case capacity with these longer bullets, the .260 has a minimal 0.7 grain advantage. When you combine the 30 degree shoulder (20 degree shoulder in .260), reduced body taper, and shorter case length you get a more efficient cartridge that burns less powder and gets the same numbers as the .260. If you reload, that means more bang for your buck. If you don't, the Creedmoor Hornady ammo is less costly compared to the .260. Hornady offers match ammo in 120 and 140 grain A-Max and cost around $26/box. Nosler will start producing ammunition for the 6.5 Creedmoor this spring, as well as brass. One of Nosler's 6.5 Creedmoor loads will be match ammo ($40/box).

The 6.5x284 should be in a long action to make full use of that cartridge. I know nothing of the 6mm Norma BR.

Last edited by Geo_Erudite; January 29, 2013 at 12:28 PM.
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Old January 29, 2013, 04:07 PM   #4
precision_shooter
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Thanks for the info Geo.

So with the steeper shoulder, does that mean throat erosion is worse with the 6.5 Creedmore over the 260?
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Old January 29, 2013, 04:38 PM   #5
kahrguy
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Go over to 6MMBR or ACCURATE SHOOTERS site and maybe you can figure it out there. All of them work well. You missed a 243AI.

6mmbr and the 6.5creedmoor are designed from the start as match grade cartidges.
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Old January 29, 2013, 04:53 PM   #6
alaskabushman
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I use and hunt with a .260 remington and love it! Many deer and one black bear (not an ideal cartridge for bear but it did the job) have fallen to my 129 grain Hornady SST reloads. Its accuracy is superb and recoil very manageable. Factory ammo is where the rub lies, its spendy so unless you reload that will be annying to buy ammo. All in all a good round, in fact I'm looking for another rifle to add to my collection chambered for this hot little number. As far as real-life killing power between this and other 6.5 rounds, you probably wouldn't notice a difference, I'm sure the animal wont.
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Old January 29, 2013, 08:24 PM   #7
Mezzanine
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The Creedmoor has been pretty well covered by Geo already. All i can add is i have a DPMS LR65 and it is one of a few firearms i can say i will never sell. Nothing negative about it except local stores are often sold out of the Creedmoor ammo. I usually order online because of it.
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Old January 29, 2013, 08:35 PM   #8
Bart B.
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While 6.5mm bullets oft times have high BC's, consider a .308 Win. shooting 250-gr. Sierra HPMK's out at 2150 fps from a long leade chamber. Tack driving 1000 yard accuracy.
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Old January 31, 2013, 10:31 PM   #9
reynolds357
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Bart, I just dont see the .308's placing at the 1000 yd matches. 6.5X284 and 284 seem to be handily dominant at the present.
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Old February 1, 2013, 12:06 AM   #10
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What are you going to use it for? If just for informal target shooting, I'd go with the .260. If you reload, you can use .243 or .308 cases, but if .308's are used, you will have to turn the necks. Creedmoor ballistics are nearly identical to .260, but finding cases to reload can be iffy at times. If you are going to compete, then I'd go with the 6.5x284. It has proven itself as an exceptionally accurate cartridge, and can push the 142's around 200fps faster than the 260 or the Creedmore, but the tradeoff is less barrel life. That can be overcome to an extent by shooting slowly and not allowing the barrel to heat up. I bet you will enjoy whatever one of these you choose, for they're all excellent cartridges.
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Old February 1, 2013, 01:42 AM   #11
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I just bought a Ruger M77 Mark ll VT in 6.5 creedmoeer for informal target shooting. Got it on sale at Gallery of Guns. Last one I had in 223, I was able to 3/8" groups at 100 yds. with Hornady ammo. The club were I shoot has a 300 yd range so I'm going to give it a go. Just need to figure out a scope.
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