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200 grain 6.5 revisited (Attention Elkaholic, and Hammer)
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<blockquote data-quote="codyadams" data-source="post: 1897008" data-attributes="member: 87243"><p>The 131 over the 137 simply because the 137 necessitates a 6.5 twist, not sure if the rather extreme twist would be deteimental to accuracy at extreme velocities. As far as capacity....not totally sure? I know West Texas Ordinance did a 7-300NM Improved, with a 30° shoulder, and capacity was 107 grains. Throw a 35-40° shoulder, take away some by going from .284 to .264, maybe do something with case taper, you may get 110 or so out of it? I think the main benefit over the 6.5 ultracat would be a less tempermental cartridge, due to case design, and it may be a lot easier to get a consistent load in such an extremly overbore cartridge. It would however, as you said, necessitate a different action, being that it is a wildcat with no known data, and max pressure would need to be found....wouldn't want to do that on an action with a .700" bolt. With the performance cases like this get, with a 100 yard zero.....it only takes around 12 MOA or less to reach 1000 yds at my elevation. That's just dumb ha ha</p></blockquote><p></p>
[QUOTE="codyadams, post: 1897008, member: 87243"] The 131 over the 137 simply because the 137 necessitates a 6.5 twist, not sure if the rather extreme twist would be deteimental to accuracy at extreme velocities. As far as capacity....not totally sure? I know West Texas Ordinance did a 7-300NM Improved, with a 30° shoulder, and capacity was 107 grains. Throw a 35-40° shoulder, take away some by going from .284 to .264, maybe do something with case taper, you may get 110 or so out of it? I think the main benefit over the 6.5 ultracat would be a less tempermental cartridge, due to case design, and it may be a lot easier to get a consistent load in such an extremly overbore cartridge. It would however, as you said, necessitate a different action, being that it is a wildcat with no known data, and max pressure would need to be found....wouldn't want to do that on an action with a .700" bolt. With the performance cases like this get, with a 100 yard zero.....it only takes around 12 MOA or less to reach 1000 yds at my elevation. That's just dumb ha ha [/QUOTE]
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200 grain 6.5 revisited (Attention Elkaholic, and Hammer)
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