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Rifles, Reloading, Optics, Equipment
Reloading
300 win mag 185 berger
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<blockquote data-quote="brentc" data-source="post: 1069199" data-attributes="member: 16938"><p>You could still be in the lands at 3.565. You really should pull the firing pin to get a true feel for the resistance. Pull the firing pin and seat the bullet to where you know it will hit the lands. Then seat the bullet deeper until there is no resistance to close the bolt and there is no "pop" at the top of the bolt lift. This is your "to the lands" measurement. Next polish the bullet with steel wool to remove all existing marks and chamber it again a few times looking for rifling marks around the circumference of the bullet. You will normally see slight drag marks on one side of the bullet due to the ejector pushing against the cartridge base while you pull the bolt to the rear, disregard them and look for marks indicating rifling contact.</p><p></p><p>If you're getting good groups at a seating depth from your measured point, run it. The true measurement is unnecessary if you're getting the results you're looking for.</p></blockquote><p></p>
[QUOTE="brentc, post: 1069199, member: 16938"] You could still be in the lands at 3.565. You really should pull the firing pin to get a true feel for the resistance. Pull the firing pin and seat the bullet to where you know it will hit the lands. Then seat the bullet deeper until there is no resistance to close the bolt and there is no "pop" at the top of the bolt lift. This is your "to the lands" measurement. Next polish the bullet with steel wool to remove all existing marks and chamber it again a few times looking for rifling marks around the circumference of the bullet. You will normally see slight drag marks on one side of the bullet due to the ejector pushing against the cartridge base while you pull the bolt to the rear, disregard them and look for marks indicating rifling contact. If you're getting good groups at a seating depth from your measured point, run it. The true measurement is unnecessary if you're getting the results you're looking for. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 win mag 185 berger
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