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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
243 bullets shooting quite different.
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<blockquote data-quote="emp1953" data-source="post: 1751900" data-attributes="member: 71817"><p>my vote is for a combination of twist rate, barrel length and barrel harmonics. The 100gr bullet is quite a bit longer than the 70 gr. The twist rate that makes the 70gr shoot great doesn't like the longer heavier bullet. I've had it happen to me with a Remington Model 7. Shot light bullets to one point and 100's to another point. Still was a nice group. So I learned to live with the windage / elevation adjustments when switching from varmints to deer. A change to a powder with a different burn rate also helped tighten the groups with the heavier bullet. Additionally freebore had to change for the heavier longer bullet. For all intents and purposes I worked up an entirely different load. Every rifle has its own personality even if they are the same manufacturer and sequential serial numbers.</p></blockquote><p></p>
[QUOTE="emp1953, post: 1751900, member: 71817"] my vote is for a combination of twist rate, barrel length and barrel harmonics. The 100gr bullet is quite a bit longer than the 70 gr. The twist rate that makes the 70gr shoot great doesn't like the longer heavier bullet. I've had it happen to me with a Remington Model 7. Shot light bullets to one point and 100's to another point. Still was a nice group. So I learned to live with the windage / elevation adjustments when switching from varmints to deer. A change to a powder with a different burn rate also helped tighten the groups with the heavier bullet. Additionally freebore had to change for the heavier longer bullet. For all intents and purposes I worked up an entirely different load. Every rifle has its own personality even if they are the same manufacturer and sequential serial numbers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
243 bullets shooting quite different.
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