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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM OAL effects
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<blockquote data-quote="kcebcj" data-source="post: 986138" data-attributes="member: 10391"><p>I don't think you will see a lot of difference in velocities from changing the COAL if you adjust the amount of powder. More important is the max COAL going to limit how close you can get to the lands. It would be a good idea to have a conversation with your smith about the chamber options and the max COAL.</p><p></p><p>I'm building a 300 WM and the magazine will allow 3.650 COAL and that will get me to within .010 +- of the lands using the 215gr Berger with a standard chamber. I ran both the 3.650 and the standard 3.340 COAL in Quick Load and maxed out the pressure equally and there was a 15fps difference the 3.650 being the fastest.</p></blockquote><p></p>
[QUOTE="kcebcj, post: 986138, member: 10391"] I don't think you will see a lot of difference in velocities from changing the COAL if you adjust the amount of powder. More important is the max COAL going to limit how close you can get to the lands. It would be a good idea to have a conversation with your smith about the chamber options and the max COAL. I'm building a 300 WM and the magazine will allow 3.650 COAL and that will get me to within .010 +- of the lands using the 215gr Berger with a standard chamber. I ran both the 3.650 and the standard 3.340 COAL in Quick Load and maxed out the pressure equally and there was a 15fps difference the 3.650 being the fastest. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM OAL effects
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