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Rifles, Reloading, Optics, Equipment
Reloading
rcbs full length die and cam over...
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<blockquote data-quote="RegionRat" data-source="post: 1439626" data-attributes="member: 57231"><p>The press ram mechanism has slop. The stiffness of the ram is non-linear and increases with load.</p><p></p><p>The potential position of that ram under a low load versus a high load (cam over) is why they have recommended cam-over as a general rule. That said, it is certainly possible to get good results without cam-over.</p><p></p><p>When you cam-over the position and stiffness of the ram is no loner a variable because you are positioning the die against the shell holder. When you don't cam over, the dispersion of that ram position is based on friction in your die pushing the slop out of the ram. If that works, you are done.</p><p></p><p>If that doesn't work for you, those incremental shell holders are the answer. Check your headspace and shoulder datum in either case.</p></blockquote><p></p>
[QUOTE="RegionRat, post: 1439626, member: 57231"] The press ram mechanism has slop. The stiffness of the ram is non-linear and increases with load. The potential position of that ram under a low load versus a high load (cam over) is why they have recommended cam-over as a general rule. That said, it is certainly possible to get good results without cam-over. When you cam-over the position and stiffness of the ram is no loner a variable because you are positioning the die against the shell holder. When you don’t cam over, the dispersion of that ram position is based on friction in your die pushing the slop out of the ram. If that works, you are done. If that doesn’t work for you, those incremental shell holders are the answer. Check your headspace and shoulder datum in either case. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
rcbs full length die and cam over...
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