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Rifles, Reloading, Optics, Equipment
Reloading
Easy/accurate way to find the lands
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<blockquote data-quote="Mikecr" data-source="post: 1159011" data-attributes="member: 1521"><p>I don't know, it's easy but hard to declare as accurate in determining 'touching'.</p><p>His measure is of extraction resistance feel rather than touching feel. </p><p></p><p>There is ITL, TOUCHING, OTL, and JAM.</p><p>Both ITL/OTL are purely w/resp to touching, which does not leave any marks at all.</p><p>Anything beyond touching is ITL. ITL leaves marks and provides extraction resistance as a matter of wedging interface leade angle to ogive radius.</p><p>Anything soft seating the bullet is JAM.</p><p></p><p>Touching is my setting of a bullet squarely against lands with the barrel pointed down. Even with the spring force of an indicator to the bullet base, there is no wedging or marking of ogives there, it's touching..</p><p>You might wonder the use in this,, it's called the 'cleaning rod method' of determining touching COAL. There is a rig setup officially by R-P Tool(which I use), but there have been many in method.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1159011, member: 1521"] I don't know, it's easy but hard to declare as accurate in determining 'touching'. His measure is of extraction resistance feel rather than touching feel. There is ITL, TOUCHING, OTL, and JAM. Both ITL/OTL are purely w/resp to touching, which does not leave any marks at all. Anything beyond touching is ITL. ITL leaves marks and provides extraction resistance as a matter of wedging interface leade angle to ogive radius. Anything soft seating the bullet is JAM. Touching is my setting of a bullet squarely against lands with the barrel pointed down. Even with the spring force of an indicator to the bullet base, there is no wedging or marking of ogives there, it's touching.. You might wonder the use in this,, it's called the 'cleaning rod method' of determining touching COAL. There is a rig setup officially by R-P Tool(which I use), but there have been many in method. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Easy/accurate way to find the lands
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