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.260 Rem or 6.5X47 Lapua?

 
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  #8  
Old 01-14-2008, 11:24 PM
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I agree with eddybo. The soft 260 remington brass cannot be loaded to the same pressure as the 6x47 lapua and actual, real-world velocities are very similiar if not identical. Especially if loading to fit a vld bullet into a shorter box magazine.

In my mind, there isn't even a comparison in these two cartridges. The lapua has a smaller flash hole (proven to be more accurate) and uses a small rifle primer (which is less violent for such a smallish case) and the brass is harder, more uniform, and the necks are longer. In my mind, if you want more speed with a 6.5mm, you shoot a 6.5-284 or 6.5 WSM. If you want a smaller case that has better barrel life, you should go with a 6.5x47 lapua. I'm not saying the 260 is a dog or anything, but it has been outdone by the lapua and the current match reports prove it.
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  #9  
Old 01-15-2008, 01:42 AM
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Can I chime in?

Having been the first knuckledragger to ever chamber the 6X47 here in the States, I might be able to contribute here. (I built a course gun and forming dies for a guy in CA almost seven years ago.)

Understand this cartridge was never intended for anything other than 300 meter international type competitive shooting. The cartridge was developed by the Swiss rifle team.

The original factory loaded RUAG ammunition was loaded to a velocity of just over 2800 fps with 105 A max bullets from Hornady.

That's it.

So, considering the case for the 6.5 is virtually identical in every way with the exception of neck ID and the small primer, it's not unrealistic to say this cartridge is slower.

Now, that being said, here's something that screws all this up a little.

In 2002 I worked on a little project with a kid who shot on the US Long Range Team (Jr Palma). We built a cross the course L/H AR-10. One of the first L/H AR-10 receivers ever produced by Rock River.

Anyways, we chambered it in 6X47 and took it to Raton's 1000 yard range.

His first time out, with experimental hand loads, the gun shot an 8X clean at the 1K line.

Not bad for a gas gun. It held 1/3 moa elevation all day long.

So, for hunting the 6.5 might be a little light for stuff way out there, but if your shooting dogs or "yotes" I think you'll be fine.
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  #10  
Old 01-15-2008, 09:18 AM
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Chad...I may be wrong here but didnt the 6.5x47 originally have the large primer pockets? I think I read this somewhere and this may be the reason you only got 28k with the 105 a-max. I am getting nearly 3100 with the 115 moly dtac out of my 6x47 and a touch over 3k fps with 123 smks in my 6.5x47. Accuracy is somewhere between a 6ppc and a 6br IMO
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  #11  
Old 01-16-2008, 02:59 PM
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Yes, the 6X47SM has large rifle primer pockets.

The main intention of the cartridge is tailored about heavy six millimeter bullets.

My brass source was an old man in switzerland picking once fired cases from the range. He'd then mail them to me.

Neat cartridge. I became obsessed with it for awhile. still want to build another gun on it just cause I have all the tooling and brass now.

someday. . .
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  #12  
Old 01-16-2008, 07:47 PM
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I have a 260 thats chamber is cut on the tight end of the norm , I use 308 lapua brass with the necks barely turned giving me a tight neck advantage , I've kept track with this thread for a while and just a bit ago I decided to run a few loads though it just to see what would happen.

Here is what was used
Remm 700 action fully blueprinted 27" Lilja 3 groove barrel 1-8 twist
308 brass nrck down once fired and neck sized
140gr Berger VLD bullet
Federal 210M primers

ending max load 52gr of N-165 powder resulted in sticky bolt and slightly flattened primers the absolute max i'll run pressure wise , average velocity for 3 shots was 3029fps !!
no check for accuracy

ending max load 50grs or N-560 powder rewsulting in sticky bolt and flattening primers , average velocity for 3 shots was 3077fps

I'm a firm believer in the saying their is no substitute for cubic inches so when the same quality brass is used the 260 will out run the 6.5x47 but at what cost , higher pressures with a noticable increase in powder which is going to meen faster barrel wear. Also the need for an extenede mag box fitted to seat the bullets out realy far. I'm noit sure what the 6.5x47 can do when run up to max pressures , it realy doesn't matter as the chances of the any gun shooting well at maxed out pressures is slim no matter what the caliber
I love my 260 , its very accurate , using quality Lapua brass is a huge plus ,that said I'll be building a 6mm very soon as pretty much a dedicated target rifle and I'll be using the 6.5x47 Lapua as the parent case , their is just to many advantages with this smaller case not to use it , especialy being necked down to 6mm.

If I were gonna build another 6.5 I'd certainly use the 6.5x47
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  #13  
Old 01-16-2008, 07:49 PM
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Thanks for all the helpful advice. I also considered the 6.5 Creedmoor which operates at lower pressure than the 6.5X47; but, it's still too early for that one and the smith I've been speaking with can't do it. I've decided to go with the 6.5X47 Lapua. Brass is pricier, but better. Pressure is higher, but it doesn't have to be loaded to maximum. I wasn't aware the neck is longer than the .260 Rem, but that's worth something. Longer case necks are easier on the throat. With either chambering, it'll be around 9 months before the rifle is done.
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  #14  
Old 01-17-2008, 04:28 PM
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I think you'll find yourself shooting 123-130gr bullets using the 6.5x47. With the 140+gr bullets you'll be doggin along pretty slow.
I don't have a 260, but my 6.5wssm pretty much matches the capacity, and no 6.5x47 will ever keep up with it.
Just as I will never touch 6.5x284 potential.

It really does come down to capacity.
Any other claims, once qualified, amount to nothing unexpected.
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