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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Rifle build
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<blockquote data-quote="nksmfamjp" data-source="post: 2329993" data-attributes="member: 1951"><p>Start with the round, IMO. What case and bullet? Yes, I'm saying buy bullets, brass and dies first. Then load a dummy where the base end of the bearing surface is even with the base of the neck. Measure CBTO. That is very close to case length plus freebore measurements.</p><p></p><p>The OAL will drive your mag and action selection choices. It will also drive the overall feasibility of the cartridge & rifle.</p><p></p><p>Then get with your gunsmith. Do you want to get a reamer or find one that is close enough? A guy that has built several long RUM's likely has a reamer with known results.</p></blockquote><p></p>
[QUOTE="nksmfamjp, post: 2329993, member: 1951"] Start with the round, IMO. What case and bullet? Yes, I’m saying buy bullets, brass and dies first. Then load a dummy where the base end of the bearing surface is even with the base of the neck. Measure CBTO. That is very close to case length plus freebore measurements. The OAL will drive your mag and action selection choices. It will also drive the overall feasibility of the cartridge & rifle. Then get with your gunsmith. Do you want to get a reamer or find one that is close enough? A guy that has built several long RUM’s likely has a reamer with known results. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Rifle build
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