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243 Lapua Brass for a 260 (vs 6.5x47)

 
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  #8  
Old 02-02-2008, 10:42 PM
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It would be my guess that 6.5x47 brass has a higher pressure rating than the others is the fact that it has small primer pockets and thus more material in the case head, not just because it is manufactured by lapua.
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  #9  
Old 02-03-2008, 06:09 PM
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I think you have to choose: max performance and more barrel life, or more barrel life and lower velocities.

The 6,5x55 will beat the 260 and 6,5x47. The european reloading manuals are conservative with the 6,5,x 55 loads because many military mauser actions were converted to sporter rifles .

I have shot 140 bergers in my 6,5-284 at 3100 ft/s in a 26 "barrel with no sign of pressure... you wont reach that in the others. But of course barrel life wont be (for max accuracy) much over 1300 rds.
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  #10  
Old 02-03-2008, 06:10 PM
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Sorry ,.I meant

I think you have to choose: max performance and LESS barrel life, or more barrel life and lower velocities.
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  #11  
Old 02-10-2008, 09:00 PM
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Which 6.5?

I shoot a 260 and 6.5X47 and my Dad shoots a 260 IMP. The shoots 123 Lapuas at 2950 fps well under .5 MOA. The 6.5X47 does the same at 2920 fps. The 260 IMP shoots 139 Lapuas at 2960 fps and is a tack driver! I had the 260 barrel set back at 1700 rounds, throat was just starting to crack, shortened .25" and still shoots great. The 260 IMP was set back at 1500 rounds and still shoots 1/4 to 1/3 MOA. The 6.5X47 is new to me but shows great promise, not worried about schorching velocity as this rifle is for me and my 10 year old daughter to shoot tactical comps with.
With the long action I would go with the 260 IMP and 243 brass. My brass prep for forming 243 into 260. Run the 243 case over a .264 mandrel then neck turn about 3/4 of the neck to clean up neck and to avoid the doughnut (this can be done after doughnut forms also) then load and shoot. You could do the same with the 260 IMP with the addition of fireforming. My Dad shoots REM 260 brass with no issues. He bought a very good batch of 500 and has had no issues. The whole batch had a variance of less than 2. grains. The stuff works great. And I don't think he will have any doughnut issues because of the 40 degree shoulder.

Hope this helps
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