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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
seat vld's to the lands or off a bit?
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<blockquote data-quote="rjb" data-source="post: 27184" data-attributes="member: 1145"><p><strong>Re: seat vld\'s to the lands or off a bit?</strong></p><p></p><p>WB be carefule what you ask for. The throat</p><p>cut when barrel is chambered is usually by that same reamer. So just facing off barrel and using same reamer will not change bullet seating. I had a custom reamer made with short throat in another caliber to suit lighter bullets. Then 107s were seated pretty</p><p>deep but only boattails stuck below the neck/shoulder junction. Recently there were some VLDs that blew at long raange (&gt;500yds)</p><p>out of this 1:8 twist. So I ordered a throater reamer in 6mm from Dave Manson. With</p><p>it the bullet seating to lands was advanced</p><p>another 0.100". This moved 105s and 107s into neck an they can still touch lands if wanted. Many factory or SAMMI spec chamber</p><p>reamers have the "safety" free bore you found. A complete custom reamer might be necessary. Some gunsmiths cut chamber and throat (bullet seat) separately to tune for</p><p>particular loads on request. Hope that helps, rjb</p></blockquote><p></p>
[QUOTE="rjb, post: 27184, member: 1145"] [b]Re: seat vld\'s to the lands or off a bit?[/b] WB be carefule what you ask for. The throat cut when barrel is chambered is usually by that same reamer. So just facing off barrel and using same reamer will not change bullet seating. I had a custom reamer made with short throat in another caliber to suit lighter bullets. Then 107s were seated pretty deep but only boattails stuck below the neck/shoulder junction. Recently there were some VLDs that blew at long raange (>500yds) out of this 1:8 twist. So I ordered a throater reamer in 6mm from Dave Manson. With it the bullet seating to lands was advanced another 0.100". This moved 105s and 107s into neck an they can still touch lands if wanted. Many factory or SAMMI spec chamber reamers have the "safety" free bore you found. A complete custom reamer might be necessary. Some gunsmiths cut chamber and throat (bullet seat) separately to tune for particular loads on request. Hope that helps, rjb [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
seat vld's to the lands or off a bit?
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