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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistic comparison of 2 25-06 factory loads
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<blockquote data-quote="MagnumManiac" data-source="post: 986390" data-attributes="member: 10755"><p>24" 6 groove 1:10" twist. RE25 is significantly slower than H1000, therefore the higher velocity, and yes this data/load IS pressure tested in MY rifle. I have a Pressure Trace II.</p><p></p><p>TMH,</p><p>The reason you have seen the bullets hit significantly different is due to barrel harmonics. As a bullet travels down the bore, the barrel oscillates in a circular motion, it can be an oblong, either from side to side or up and down or any other combination of this. If a bullet exits at the bottom of the oscillation, it hits lower, the opposite is true if a bullet exits at the top of the oscillation. Good groups occur when the oscillation is at it's slowest or when it has stopped and the barrel time is consistent enough that all bullets with that load exit at the same time.</p><p>Hope this helps you understand how you should always re sight your rifle if switching between bullet weights.</p><p>Cheers.</p><p>gun)</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 986390, member: 10755"] 24" 6 groove 1:10" twist. RE25 is significantly slower than H1000, therefore the higher velocity, and yes this data/load IS pressure tested in MY rifle. I have a Pressure Trace II. TMH, The reason you have seen the bullets hit significantly different is due to barrel harmonics. As a bullet travels down the bore, the barrel oscillates in a circular motion, it can be an oblong, either from side to side or up and down or any other combination of this. If a bullet exits at the bottom of the oscillation, it hits lower, the opposite is true if a bullet exits at the top of the oscillation. Good groups occur when the oscillation is at it's slowest or when it has stopped and the barrel time is consistent enough that all bullets with that load exit at the same time. Hope this helps you understand how you should always re sight your rifle if switching between bullet weights. Cheers. gun) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistic comparison of 2 25-06 factory loads
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