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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How many cuts ??
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<blockquote data-quote="Trickymissfit" data-source="post: 1179463" data-attributes="member: 25383"><p>with the advent of statistical process control, and precision measuring on the fly; you monitor the reamer wear as it goes. Normally nobody wants to change out the reamer, as you get to start all over with everything in that hole (no two reamers cut exactly the same). Ultra critical multi step holes (like a chamber) can be cut with a Mapol reamer, and you may see four hundred holes off the reamer (I've seen six hundred and still holding less than three tenths). The down side is the cost of the reamer. About $5,000, but worth every penny when it has to be right. </p><p></p><p>What most folks fail to realize, is that a typical CNC lathe (kept in good shape) is quite capable of cutting the chamber without the reamer. The process takes much longer (about five passes), and will be in the .00075" range.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 1179463, member: 25383"] with the advent of statistical process control, and precision measuring on the fly; you monitor the reamer wear as it goes. Normally nobody wants to change out the reamer, as you get to start all over with everything in that hole (no two reamers cut exactly the same). Ultra critical multi step holes (like a chamber) can be cut with a Mapol reamer, and you may see four hundred holes off the reamer (I've seen six hundred and still holding less than three tenths). The down side is the cost of the reamer. About $5,000, but worth every penny when it has to be right. What most folks fail to realize, is that a typical CNC lathe (kept in good shape) is quite capable of cutting the chamber without the reamer. The process takes much longer (about five passes), and will be in the .00075" range. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How many cuts ??
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