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Long Range Hunting & Shooting
Improving the 260...
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<blockquote data-quote="highdrum" data-source="post: 1665251" data-attributes="member: 13732"><p>Are you going to build on a long action to take full advantage of that extra powder space? @ 2.85" oal the 260 case has heavy for cal 140+gr bullets sitting pretty deep in the powder space. I'd run a 24" bbl minimum if you're looking for max fps. 1:8 twist will be plenty, there are a few new bullets out that have great BC that require 1:7.5 but they're heavy and that small case would probably have better ballistics shooting a bit lighter bullets faster. Here is my stance on this......I sold my 6.5 creedmoor, and the 260ai is just a lil step above that case on a short action. To use extra powder space it needs be run on a long action, but then why stop there? If I were building a rifle to run on a long action that would have great brass, good barrel life, good performance, it'd be a 6.5x55 improved. Lapua brass, will run right with a 6.5x284 with less powder.</p></blockquote><p></p>
[QUOTE="highdrum, post: 1665251, member: 13732"] Are you going to build on a long action to take full advantage of that extra powder space? @ 2.85" oal the 260 case has heavy for cal 140+gr bullets sitting pretty deep in the powder space. I'd run a 24" bbl minimum if you're looking for max fps. 1:8 twist will be plenty, there are a few new bullets out that have great BC that require 1:7.5 but they're heavy and that small case would probably have better ballistics shooting a bit lighter bullets faster. Here is my stance on this......I sold my 6.5 creedmoor, and the 260ai is just a lil step above that case on a short action. To use extra powder space it needs be run on a long action, but then why stop there? If I were building a rifle to run on a long action that would have great brass, good barrel life, good performance, it'd be a 6.5x55 improved. Lapua brass, will run right with a 6.5x284 with less powder. [/QUOTE]
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