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Rifles, Reloading, Optics, Equipment
Reloading
Few seating depth questions
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<blockquote data-quote="Mikecr" data-source="post: 1367416" data-attributes="member: 1521"><p>That's correct.</p><p>Let's say your 'accurate barrel life' is 1500rnds. If 2.910/.020 OTL was found as best initially, you can expect this to hold as true to 1500. Beyond this, seating tweaks will shape grouping as always, and with this & powder adjustments you might extend accurate barrel life another ~200.</p><p>But of course, barrel life itself is another discussion. You may not get 1500 great shots from it, or extend life another 500 with a barrel setback..</p><p>Either way your optimum seating window should hold.</p><p></p><p>For those that 'chase the lands'?</p><p>It better be a **** good load before I would put myself there, as erosion is not linear. And it really takes off later in life.</p><p>If I were shooting an underbore, like a 6PPC or 30BR, where barrel life is completely known and I had a solid plan to reach it every time, then I wouldn't be concerned about ITL relationships. For a hunting cartridge (way more powder per bore), no way I'd bother with it.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1367416, member: 1521"] That's correct. Let's say your 'accurate barrel life' is 1500rnds. If 2.910/.020 OTL was found as best initially, you can expect this to hold as true to 1500. Beyond this, seating tweaks will shape grouping as always, and with this & powder adjustments you might extend accurate barrel life another ~200. But of course, barrel life itself is another discussion. You may not get 1500 great shots from it, or extend life another 500 with a barrel setback.. Either way your optimum seating window should hold. For those that 'chase the lands'? It better be a **** good load before I would put myself there, as erosion is not linear. And it really takes off later in life. If I were shooting an underbore, like a 6PPC or 30BR, where barrel life is completely known and I had a solid plan to reach it every time, then I wouldn't be concerned about ITL relationships. For a hunting cartridge (way more powder per bore), no way I'd bother with it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Few seating depth questions
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