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Rifles, Reloading, Optics, Equipment
Reloading
338 RUM COAL with 300g Bergers?
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<blockquote data-quote="bitbythebug" data-source="post: 1123524" data-attributes="member: 90401"><p>26" but my lands were at 3.83. I tried 91 grains but was to hot at that coal. Each gun is different. What brass are you using? When I use Nosler brass my velocities go down to around 2700 with 87.5 grs. of retumbo but with R-P my velocities go up. Don't know why. It took around 100 rounds down tube before my gun got real accurate and velocities went up with same powder charges. Also don't know why,copper fouling I suspect. I also found that the closer I got to the lands the more the pressure went up along with velocities. You may, at 3.75, be far enough back that the pressure isn't as great and thus the lower velocity.</p></blockquote><p></p>
[QUOTE="bitbythebug, post: 1123524, member: 90401"] 26" but my lands were at 3.83. I tried 91 grains but was to hot at that coal. Each gun is different. What brass are you using? When I use Nosler brass my velocities go down to around 2700 with 87.5 grs. of retumbo but with R-P my velocities go up. Don't know why. It took around 100 rounds down tube before my gun got real accurate and velocities went up with same powder charges. Also don't know why,copper fouling I suspect. I also found that the closer I got to the lands the more the pressure went up along with velocities. You may, at 3.75, be far enough back that the pressure isn't as great and thus the lower velocity. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
338 RUM COAL with 300g Bergers?
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