April 9, 2013, 08:02 PM | #1 |
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223 using the same oal ?
If the best accuracy with a 55 grain Hornady soft point bullet is with an OAL of 2.200, then why not load all 55 grain bullets to that OAL ?
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April 9, 2013, 08:34 PM | #2 | |
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April 10, 2013, 06:27 AM | #3 |
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It's not the base-to-tip measurement that's important, it's base-to-Ogive that is important.
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April 10, 2013, 09:28 AM | #4 | |
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April 10, 2013, 09:41 AM | #5 |
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Different bullets have a different profile, different ogive length. The ogive is the part of the bullet that is full-caliber size, the first part to encounter the barrel.
The base (of the case, the head) to ogive measurement dictates how far the bullet is from the rifling. Two different bullets loaded to the same OAL can be dramatically different distances from the rifling. Two bullets loaded to the same ogive length will be the same distance from the rifling but might be different OAL.
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April 10, 2013, 05:28 PM | #6 |
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The most common way to "do it" is with a Bullet Comparator.
http://www.youtube.com/watch?v=llvsEsaK8-M Notice he is off as the distance off the lands is not .52 inches, but a more realistic .052. Last edited by steve4102; April 10, 2013 at 05:40 PM. |
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