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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
To lengthen the throat or not
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<blockquote data-quote="baldhunter" data-source="post: 2712473" data-attributes="member: 11853"><p>The throat on a 300WSM starts right at the barrel opening.The lands have a long taper.I had one that I had to load my 165gr bullets using 180gr data.I had the velocity I should get,but I had to keep my loads about a grain or two under book max for used bullet weight.I fire lapped the barrel and my loads dropped around 100fps.I moved my throat enough that I could start loading it at recommended book max for the bullet weight I was using.I think I used 20 lapping bullets and it moved my bullet ogive to lands about .100</p></blockquote><p></p>
[QUOTE="baldhunter, post: 2712473, member: 11853"] The throat on a 300WSM starts right at the barrel opening.The lands have a long taper.I had one that I had to load my 165gr bullets using 180gr data.I had the velocity I should get,but I had to keep my loads about a grain or two under book max for used bullet weight.I fire lapped the barrel and my loads dropped around 100fps.I moved my throat enough that I could start loading it at recommended book max for the bullet weight I was using.I think I used 20 lapping bullets and it moved my bullet ogive to lands about .100 [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
To lengthen the throat or not
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