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Rifles, Reloading, Optics, Equipment
Reloading
Seating depth / Nosler bullets
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<blockquote data-quote="royinidaho" data-source="post: 331520" data-attributes="member: 2011"><p>You are doing way more measurements than I can keep track of. That would drive me nuts.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>A simple way to determine COL to the leade is to.</p><p></p><p></p><ol> <li data-xf-list-type="ol">Select a full length resized case.</li> <li data-xf-list-type="ol">Cut two slots in the case from mouth to base of neck. Dremel tool/cutter works best for this. Slots will be opposite from each other. Hack saw is a bit much.</li> <li data-xf-list-type="ol">Seat a bullet by hand if possible. If not possible seat with press but just start it. Then by hand wiggle it as you finish seating it.</li> <li data-xf-list-type="ol">When you "think" it has about the right neck tension pull the bullet out so that there is "just" enough in the neck to hold it.</li> <li data-xf-list-type="ol">Chamber the dummy round slowly don't slam it home.........</li> <li data-xf-list-type="ol">Slowly remove the the cartridge holding it straight with a finger so that the ejector doesn't push the cartridge to one side causing undue marks on the bullet.</li> <li data-xf-list-type="ol">IF: the bullet remains in the chamber, there is insufficient neck tension.</li> <li data-xf-list-type="ol">THEN: Hold the barrel vertical and drop a smaller caliber bullet down the tube base first. A 60 gr .222 does well for me in a 270 cal. (Running a rod from muzzle to chamber gives me the vapors.)</li> <li data-xf-list-type="ol">Increase neck tension a bit.</li> <li data-xf-list-type="ol">GOTO step 5</li> <li data-xf-list-type="ol">When the bullet comes out with the case and neck tension is right you should marks where the leade has be touched should be visible.</li> <li data-xf-list-type="ol">Measure with your stoney point and you have the length to the rifling.</li> </ol><p>Load 3 and shoot 'em. If the groups aren't what you want, shorten the COL. If the groups shrink keep shortening until they expand. You then have the best COL for that bullet and load after returning to the last COL that produced good groups.</p><p></p><p>If the groups immediately increase, increase the COL from the original setting and see what happens.</p><p></p><p>Warning, seating too long MAY cause a bullet to remain in the rifling when the case is extracted. If this happens on a hunt it will certainly erk your nerves. Been there done that. This will most probably necessitate use of a rod to remove the seated bullet.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></p></blockquote><p></p>
[QUOTE="royinidaho, post: 331520, member: 2011"] You are doing way more measurements than I can keep track of. That would drive me nuts.:D A simple way to determine COL to the leade is to. [LIST=1] [*]Select a full length resized case. [*]Cut two slots in the case from mouth to base of neck. Dremel tool/cutter works best for this. Slots will be opposite from each other. Hack saw is a bit much. [*]Seat a bullet by hand if possible. If not possible seat with press but just start it. Then by hand wiggle it as you finish seating it. [*]When you "think" it has about the right neck tension pull the bullet out so that there is "just" enough in the neck to hold it. [*]Chamber the dummy round slowly don't slam it home......... [*]Slowly remove the the cartridge holding it straight with a finger so that the ejector doesn't push the cartridge to one side causing undue marks on the bullet. [*]IF: the bullet remains in the chamber, there is insufficient neck tension. [*]THEN: Hold the barrel vertical and drop a smaller caliber bullet down the tube base first. A 60 gr .222 does well for me in a 270 cal. (Running a rod from muzzle to chamber gives me the vapors.) [*]Increase neck tension a bit. [*]GOTO step 5 [*]When the bullet comes out with the case and neck tension is right you should marks where the leade has be touched should be visible. [*]Measure with your stoney point and you have the length to the rifling. [/LIST] Load 3 and shoot 'em. If the groups aren't what you want, shorten the COL. If the groups shrink keep shortening until they expand. You then have the best COL for that bullet and load after returning to the last COL that produced good groups. If the groups immediately increase, increase the COL from the original setting and see what happens. Warning, seating too long MAY cause a bullet to remain in the rifling when the case is extracted. If this happens on a hunt it will certainly erk your nerves. Been there done that. This will most probably necessitate use of a rod to remove the seated bullet.:rolleyes: [/QUOTE]
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Seating depth / Nosler bullets
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