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Rifles, Reloading, Optics, Equipment
Equipment Discussions
.300 Lapua Mag.
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<blockquote data-quote="Guest" data-source="post: 45676"><p>According to RCBS.load software, the two cases, loaded to 3.6" COL with a 1.4" long bullet, the RUM case has about 97g of water below; the Lapua has about 103g.</p><p>The way I drew the case is by simply necking down, then bringing the top of the shoulder back to the 30* point, leaving the body the same length. Of course, you could move the shoulder forward as well. And you can gain 3.5g simply by taking that "excess " taper out. By doing that, then moving the shoulder to the point of the RUM, you get a little over 116g <img src="http://images/icons/shocked.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> !</p><p>So, it depends on what you want to do.</p><p></p><p>But to back up a bit, I would look at your rifle, how long a bbl you're thinking of, which bullet you want to shoot, and check out the RUM's ballistics. Their's faster out there, but it is a screamer as-is. And much cheaper than custom reamers, dies, Lapua Mag cases, etc.</p></blockquote><p></p>
[QUOTE="Guest, post: 45676"] According to RCBS.load software, the two cases, loaded to 3.6" COL with a 1.4" long bullet, the RUM case has about 97g of water below; the Lapua has about 103g. The way I drew the case is by simply necking down, then bringing the top of the shoulder back to the 30* point, leaving the body the same length. Of course, you could move the shoulder forward as well. And you can gain 3.5g simply by taking that "excess " taper out. By doing that, then moving the shoulder to the point of the RUM, you get a little over 116g [img]images/icons/shocked.gif[/img] ! So, it depends on what you want to do. But to back up a bit, I would look at your rifle, how long a bbl you're thinking of, which bullet you want to shoot, and check out the RUM's ballistics. Their's faster out there, but it is a screamer as-is. And much cheaper than custom reamers, dies, Lapua Mag cases, etc. [/QUOTE]
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.300 Lapua Mag.
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