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Rifles, Reloading, Optics, Equipment
Reloading
OAL guage, finding rifling, and marks on bullet
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<blockquote data-quote="AZShooter" data-source="post: 1325480" data-attributes="member: 5219"><p>I read and reread your thread. I believe you want to figure out where the lands start so you can seat a certain distance from them. </p><p></p><p>I used that Hornady OAL gauge for a while. Found, IMO, an easier way. I polish the jacket on the bullet with 000 steel wool. I deliberately seat it long. Close bolt on cartridge, When the cartridge is removed there will be evenly spaced rectangular marks on the jacket. Polish the jacket again and seat a few thousandths deeper. Repeat as needed. Eventually the marks will become squares then shrink till they are barely visible. Simply seat from there. While some can argue that isn't that accurate, you could be .001" into the lands WHO CARES. It is a just a reference point that you can call zero jump. Adjust from there......</p></blockquote><p></p>
[QUOTE="AZShooter, post: 1325480, member: 5219"] I read and reread your thread. I believe you want to figure out where the lands start so you can seat a certain distance from them. I used that Hornady OAL gauge for a while. Found, IMO, an easier way. I polish the jacket on the bullet with 000 steel wool. I deliberately seat it long. Close bolt on cartridge, When the cartridge is removed there will be evenly spaced rectangular marks on the jacket. Polish the jacket again and seat a few thousandths deeper. Repeat as needed. Eventually the marks will become squares then shrink till they are barely visible. Simply seat from there. While some can argue that isn't that accurate, you could be .001" into the lands WHO CARES. It is a just a reference point that you can call zero jump. Adjust from there...... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
OAL guage, finding rifling, and marks on bullet
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