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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5-06?
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<blockquote data-quote="Trnelson" data-source="post: 1814627" data-attributes="member: 42308"><p>You won't hear any of the Creedmoor kookaid from me personally. Not going to bash it, it just does not trip my fancy. I've watched numerous friends try to squeeze that round for all they can to try to get to 2,950 FPS and eventually go to something else with more muscle. 6.5/06 in a 26" barrel can easily and most importantly safely get to 3,050 to 3,100 FPS with several different powders and all of the popular 140g class bullets suitable for long range hunting. </p><p></p><p>I have direct experience with 6.5/06 and 6.5/06ai. I've had some variation of 6.5/06 in my safe since 1993 when I had the first one put together. The last 6.5/06AI that I had used a 26" 8 twist and pushed 140 berger hybrids right at 3,100 FPS with Retumbo or Norma 217. I found the first signs of a bolt hitch at around 3,250fps, if I remember correctly. I had a bit of freebore added in that reamer to take better advantage of the additional powder space the ackley provided. The ackley chamber isn't magic, nor is it a 264WIN. It does all of the things that you site in your reply, but it isn't going to safely get you to much more than 3,100 FPS with 140g bullets without SD really starting to suffer. IDK precisely why SD started to really open up around 3,100 in both of the 6.5/06ai barrels that I worked with. I got a frustrated that I had to leave around 100fps of safe velocity on the table to keep SD at an acceptable, (to me), level suitable for long range hunting. I re-barreled that rig to build the most current 264WIN I'm playing with.</p></blockquote><p></p>
[QUOTE="Trnelson, post: 1814627, member: 42308"] You won’t hear any of the Creedmoor kookaid from me personally. Not going to bash it, it just does not trip my fancy. I’ve watched numerous friends try to squeeze that round for all they can to try to get to 2,950 FPS and eventually go to something else with more muscle. 6.5/06 in a 26” barrel can easily and most importantly safely get to 3,050 to 3,100 FPS with several different powders and all of the popular 140g class bullets suitable for long range hunting. I have direct experience with 6.5/06 and 6.5/06ai. I’ve had some variation of 6.5/06 in my safe since 1993 when I had the first one put together. The last 6.5/06AI that I had used a 26” 8 twist and pushed 140 berger hybrids right at 3,100 FPS with Retumbo or Norma 217. I found the first signs of a bolt hitch at around 3,250fps, if I remember correctly. I had a bit of freebore added in that reamer to take better advantage of the additional powder space the ackley provided. The ackley chamber isn’t magic, nor is it a 264WIN. It does all of the things that you site in your reply, but it isn’t going to safely get you to much more than 3,100 FPS with 140g bullets without SD really starting to suffer. IDK precisely why SD started to really open up around 3,100 in both of the 6.5/06ai barrels that I worked with. I got a frustrated that I had to leave around 100fps of safe velocity on the table to keep SD at an acceptable, (to me), level suitable for long range hunting. I re-barreled that rig to build the most current 264WIN I’m playing with. [/QUOTE]
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