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Rifles, Reloading, Optics, Equipment
Gunsmithing
300 Wby match reamer throat
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<blockquote data-quote="MagnumManiac" data-source="post: 1516782" data-attributes="member: 10755"><p>All of my Weatherby chambers run .0004"-.0005" straight clearance in the throat.</p><p>All but my 375 Weatherby run 3/8"/.375" throat lengths. The 375 runs 1/2"/.500" which it really needs to get 260's to 3000fps, 270's to 2950fps and 300's to 2850fps out of a 24" barrel.</p><p>I wouldn't mess with the clearances, too much pressure is leaked even bringing throat diameter to .001" over bullet diameter.</p><p>Interestingly, my 270 Weatherby has .00035" throat clearance and is rack driver even with a throat length of .375".</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1516782, member: 10755"] All of my Weatherby chambers run .0004”-.0005” straight clearance in the throat. All but my 375 Weatherby run 3/8”/.375” throat lengths. The 375 runs 1/2”/.500” which it really needs to get 260’s to 3000fps, 270’s to 2950fps and 300’s to 2850fps out of a 24” barrel. I wouldn’t mess with the clearances, too much pressure is leaked even bringing throat diameter to .001” over bullet diameter. Interestingly, my 270 Weatherby has .00035” throat clearance and is rack driver even with a throat length of .375”. Cheers. [/QUOTE]
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300 Wby match reamer throat
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