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Hunting
Long Range Hunting & Shooting
7mm build
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<blockquote data-quote="coyotezapper" data-source="post: 1516021" data-attributes="member: 20438"><p>Your missing the whole picture here. With a longer neck you keep more of the bearing surface in contact and properly seated for a longer time as you are chasing the lands. There comes a time when the throat erosion will not allow the bullet to be seated at the needed length for accuracy. I recently - a year ago set the barrel back on a 308 with .370" throat erosion including original freebore. I could not seat the bullets out far enough for them to shoot well. A longer neck would have helped extend barrel life before a set back was needed.</p><p></p><p>Your second point is apples and oranges. What your saying here is that if the 7LRM had a shorter neck then it would have more case capacity all other things being equal. Neck length has nothing to do with case capacity unless you are fire forming to an improved case so in this case it does not apply. You did not think that comment through very well. If the 7LRM neck is a product of sizing up or down or fire forming the parent case then the neck length can be trimmed to whatever length the case designer wants. Maybe the designer was going for a longer neck. Does not make it ridiculous.</p></blockquote><p></p>
[QUOTE="coyotezapper, post: 1516021, member: 20438"] Your missing the whole picture here. With a longer neck you keep more of the bearing surface in contact and properly seated for a longer time as you are chasing the lands. There comes a time when the throat erosion will not allow the bullet to be seated at the needed length for accuracy. I recently - a year ago set the barrel back on a 308 with .370" throat erosion including original freebore. I could not seat the bullets out far enough for them to shoot well. A longer neck would have helped extend barrel life before a set back was needed. Your second point is apples and oranges. What your saying here is that if the 7LRM had a shorter neck then it would have more case capacity all other things being equal. Neck length has nothing to do with case capacity unless you are fire forming to an improved case so in this case it does not apply. You did not think that comment through very well. If the 7LRM neck is a product of sizing up or down or fire forming the parent case then the neck length can be trimmed to whatever length the case designer wants. Maybe the designer was going for a longer neck. Does not make it ridiculous. [/QUOTE]
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