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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM: 180 vs 200 gr Accubond
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<blockquote data-quote="Dinky" data-source="post: 988250" data-attributes="member: 82598"><p>Using the Swarovski calculator, both bullets with 300 yard zero and assumed cross wind of 10 MPH at 700 yards:</p><p></p><p>180 grain rises no more than 3.3" at midrange.</p><p>200 grain rises no more than 4.1" at midrange.</p><p></p><p>180 grain stated BC=.507</p><p>200 grain stated BC=.588</p><p></p><p>180 grain: Drop=62.2"</p><p>200 grain: Drop=73.0"</p><p></p><p>180 grain: Drift=25.6"</p><p>200 grain: Drift=25.6"</p><p></p><p>180 grain: Velocity=2,161 FPS</p><p>200 grain: Velocity=2,051 FPS</p><p></p><p>180 grain: Energy=1,869 Ft Lbs</p><p>200 grain: Energy=1,869 Ft Lbs</p><p></p><p>(Equal numbers for drift and energy are NOT typos).</p><p></p><p>So it would seem at first glance, assuming that someone is not going to shoot deer or elk beyond 700 yards (including me <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />), the 180 grain is all upside--with the only advantage I can see for the 200 grain being its greater sectional density for a hypothetical (and doubtful for me at least) quartering shot on a large animal at 700 yards. The difference of right at a foot of drop from 300 out to 700 seems to militate in favor of the 180 grain.</p><p></p><p>Recoil would seem to be a wash.</p></blockquote><p></p>
[QUOTE="Dinky, post: 988250, member: 82598"] Using the Swarovski calculator, both bullets with 300 yard zero and assumed cross wind of 10 MPH at 700 yards: 180 grain rises no more than 3.3" at midrange. 200 grain rises no more than 4.1" at midrange. 180 grain stated BC=.507 200 grain stated BC=.588 180 grain: Drop=62.2" 200 grain: Drop=73.0" 180 grain: Drift=25.6" 200 grain: Drift=25.6" 180 grain: Velocity=2,161 FPS 200 grain: Velocity=2,051 FPS 180 grain: Energy=1,869 Ft Lbs 200 grain: Energy=1,869 Ft Lbs (Equal numbers for drift and energy are NOT typos). So it would seem at first glance, assuming that someone is not going to shoot deer or elk beyond 700 yards (including me :)), the 180 grain is all upside--with the only advantage I can see for the 200 grain being its greater sectional density for a hypothetical (and doubtful for me at least) quartering shot on a large animal at 700 yards. The difference of right at a foot of drop from 300 out to 700 seems to militate in favor of the 180 grain. Recoil would seem to be a wash. [/QUOTE]
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300 RUM: 180 vs 200 gr Accubond
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