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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Will a 260AI clean up a 6.5 CM chamber?
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<blockquote data-quote="codyadams" data-source="post: 1901815" data-attributes="member: 87243"><p>I believe JE Custom spoke of this on another thread, and Mikecr is correct, it does not clean it up properly, and would have to be set back a significant amount. If the current chamber isn't reamed perfectly strait, then it would be challenging clean it up. So it can be done, but if sticking with the same barrel, it would be best to cut off the threads and just have the smith cut new ones to ensure a proper chamber.</p><p></p><p>In my .260 AI with a 29" barrel, I am shooting the 156 EOL at 2940 fps using RL26. Pressure signs didn't appear until I was right at 3000 fps. In speaking with another member shooting them out of a 20" .260 AI, he was attaining 2725 fps, and had no pressure signs, also using RL26, with an almost identical load to mine. That should give you an idea on performance, in a 26", 2900 + or - for max, realistically you would likely run in the 2850ish range, give or take depending on how fast the barrel is. For reference, the other member was using a factory Tikka barrel that was originally a .260, and I am using a Krieger 8 twist 4 groove.</p></blockquote><p></p>
[QUOTE="codyadams, post: 1901815, member: 87243"] I believe JE Custom spoke of this on another thread, and Mikecr is correct, it does not clean it up properly, and would have to be set back a significant amount. If the current chamber isn't reamed perfectly strait, then it would be challenging clean it up. So it can be done, but if sticking with the same barrel, it would be best to cut off the threads and just have the smith cut new ones to ensure a proper chamber. In my .260 AI with a 29" barrel, I am shooting the 156 EOL at 2940 fps using RL26. Pressure signs didn't appear until I was right at 3000 fps. In speaking with another member shooting them out of a 20" .260 AI, he was attaining 2725 fps, and had no pressure signs, also using RL26, with an almost identical load to mine. That should give you an idea on performance, in a 26", 2900 + or - for max, realistically you would likely run in the 2850ish range, give or take depending on how fast the barrel is. For reference, the other member was using a factory Tikka barrel that was originally a .260, and I am using a Krieger 8 twist 4 groove. [/QUOTE]
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Will a 260AI clean up a 6.5 CM chamber?
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