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Rifles, Reloading, Optics, Equipment
Reloading
Learning how to seat to lands
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<blockquote data-quote="AZShooter" data-source="post: 1091484" data-attributes="member: 5219"><p>You can see where the lands are by seating a bullet long in a dummy round and polishing the bullet jacket with steel wool. If the bullet is out too far you may not be able to close the bolt. Just seat a bit deeper and try again. When the bolt closes the bullet will be engraved by the rifling. Most likely the marks will be long and deep. Seat the bullet deeper, polish with steel wool and repeat. Incrementally seat deeper till the marks on the jacket are barely visible. That will get you close enough to compare the rounds that fit and feed from the magazine box. </p><p></p><p>If you have a comparator and a caliper you can measure from the ogive to base of each round and have a fairly close value for the distance to the lands. You can make an expensive comparator by using a large nut and drilling a hole slightly smaller than bullet diameter and chamfering the edge of the hole with a deburring tool. </p><p></p><p>See this video to see how the hex comparator is used: </p><p></p><p>[media=youtube]u6P3GeLn2BA[/media]</p></blockquote><p></p>
[QUOTE="AZShooter, post: 1091484, member: 5219"] You can see where the lands are by seating a bullet long in a dummy round and polishing the bullet jacket with steel wool. If the bullet is out too far you may not be able to close the bolt. Just seat a bit deeper and try again. When the bolt closes the bullet will be engraved by the rifling. Most likely the marks will be long and deep. Seat the bullet deeper, polish with steel wool and repeat. Incrementally seat deeper till the marks on the jacket are barely visible. That will get you close enough to compare the rounds that fit and feed from the magazine box. If you have a comparator and a caliper you can measure from the ogive to base of each round and have a fairly close value for the distance to the lands. You can make an expensive comparator by using a large nut and drilling a hole slightly smaller than bullet diameter and chamfering the edge of the hole with a deburring tool. See this video to see how the hex comparator is used: [media=youtube]u6P3GeLn2BA[/media] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Learning how to seat to lands
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