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Rifles, Reloading, Optics, Equipment
Reloading
Base to ogive help pls
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<blockquote data-quote="The Oregonian" data-source="post: 1082991" data-attributes="member: 51405"><p>Recently got my new custom 30-06...shoots great with the load that was developed as part of the build.</p><p></p><p>The recipe calls for a base to ogive of 2.581...the loaded rounds that came with the gun measure with a few thou of 3.294 and I assume the different OAL is due to different ogive points on the bullets (Nosler BT 180gr).</p><p></p><p>I just bought a bullet comparator from Darrell Holland...It didn't come with directions but it is pretty easy to find the relative lengths of several bullets that are measured. It doesn't give OAL of bullet but it does give a relative measurement like a concentricity gauge does.</p><p></p><p>My question is how to measure to get the right CBTO measurement. Some bullets are a touch longer so I assume the OAL would be longer by that same amount, but that assumes I have a starting point that says that for a bullet of x length, the ogive is y" from the tip or base of the bullet.</p><p></p><p>Am I missing something with the comparator (pictured below)? Should I measure the COAL of a round and hen pull the bullet to see the bullet length and use that as a starting point? </p><p></p><p>Any help is appreciated.</p><p></p><p>Thanks.</p></blockquote><p></p>
[QUOTE="The Oregonian, post: 1082991, member: 51405"] Recently got my new custom 30-06...shoots great with the load that was developed as part of the build. The recipe calls for a base to ogive of 2.581...the loaded rounds that came with the gun measure with a few thou of 3.294 and I assume the different OAL is due to different ogive points on the bullets (Nosler BT 180gr). I just bought a bullet comparator from Darrell Holland...It didn't come with directions but it is pretty easy to find the relative lengths of several bullets that are measured. It doesn't give OAL of bullet but it does give a relative measurement like a concentricity gauge does. My question is how to measure to get the right CBTO measurement. Some bullets are a touch longer so I assume the OAL would be longer by that same amount, but that assumes I have a starting point that says that for a bullet of x length, the ogive is y" from the tip or base of the bullet. Am I missing something with the comparator (pictured below)? Should I measure the COAL of a round and hen pull the bullet to see the bullet length and use that as a starting point? Any help is appreciated. Thanks. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Base to ogive help pls
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