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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 SHERMAN
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<blockquote data-quote="Shane Lindsey" data-source="post: 2490402" data-attributes="member: 25831"><p>I spoke to someone about that and he mentioned lapping, but made it sound like that is required prior to chambering???</p><p></p><p>Maybe someone that has lapped one after chmabering can chime in. I did run some JB through it, but I do that every couple hundred rounds for throat maintenance anyway.</p><p></p><p>Literally cannot get anywhere close to the velocities that are posted here. Pressure at 59gr Rl17 with 250 Berger, Peterson 270 Win cases at about 2599 FPS. No accuracy here, indicating it needed to be much slower.</p><p>59.5gr Rl17 with a Speer 225gr BTSP at about 2662 FPS.</p><p></p><p>Fireforming with the 250 Berger and 250 Hornday and SWP at 2200 FPS showed promise. I was about to give up on this weight bullet until I saw those. But...that is almost as slow as my muzzleloader, and it is accurate...</p></blockquote><p></p>
[QUOTE="Shane Lindsey, post: 2490402, member: 25831"] I spoke to someone about that and he mentioned lapping, but made it sound like that is required prior to chambering??? Maybe someone that has lapped one after chmabering can chime in. I did run some JB through it, but I do that every couple hundred rounds for throat maintenance anyway. Literally cannot get anywhere close to the velocities that are posted here. Pressure at 59gr Rl17 with 250 Berger, Peterson 270 Win cases at about 2599 FPS. No accuracy here, indicating it needed to be much slower. 59.5gr Rl17 with a Speer 225gr BTSP at about 2662 FPS. Fireforming with the 250 Berger and 250 Hornday and SWP at 2200 FPS showed promise. I was about to give up on this weight bullet until I saw those. But...that is almost as slow as my muzzleloader, and it is accurate... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 SHERMAN
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