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Rifles, Reloading, Optics, Equipment
Gunsmithing
Choosing Throat Angle for 338-06 Improved
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<blockquote data-quote="shortgrass" data-source="post: 1114427" data-attributes="member: 24284"><p>The only reason I can think of is, if you don't lengthen the free bore (& throat) bullets are seated deeply into the case, taking up space that could otherwise be occupied by propellant. I used a throating reamer from Manson that had free bore incorporated in it (spiral flute) to being the loaded round length out closer to commercial Mauser specs. (3.340 mag length, 3.300 OAL cartridge w/ 250g projectile & .020" free bore before engaging the throat) Those big bullets in a /06 case, even if it's an "improved", can take up a lot of space. If you're having a reamer made a sample round makes a lot of sense.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 1114427, member: 24284"] The only reason I can think of is, if you don't lengthen the free bore (& throat) bullets are seated deeply into the case, taking up space that could otherwise be occupied by propellant. I used a throating reamer from Manson that had free bore incorporated in it (spiral flute) to being the loaded round length out closer to commercial Mauser specs. (3.340 mag length, 3.300 OAL cartridge w/ 250g projectile & .020" free bore before engaging the throat) Those big bullets in a /06 case, even if it's an "improved", can take up a lot of space. If you're having a reamer made a sample round makes a lot of sense. [/QUOTE]
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Choosing Throat Angle for 338-06 Improved
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