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Rifles, Reloading, Optics, Equipment
Reloading
Looking for a new press
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<blockquote data-quote="Trickymissfit" data-source="post: 503500" data-attributes="member: 25383"><p>the RCBS style of press depends on everything being in perfect alignment. A lot of variables there, but I suppose it can be done. The real problem with the design is that when the ram is being pushed up it tends to torque in two directions. Always felt there should have been a couple guides added in the housing to help keep the ram strait as it travels. A Forster uses two guide rods that are rigid. The die and case float for alignment. With long strait walled cases the press stays very strait (something like a 50-120) , and you can see this with the naked eye. These same cases are a bear with a Rockchucker, and cause undo wear in the housing bore. The average guy here would never see anything like this, but you might working with cases built off the "404" case size. I've installed bushings and reground the ram on a few RCBS and Hornaday/Pacific presses. You really need a good jig bore to do it, but a dead square knee mill will work just fine. I used Ampco 16 bronze bushings that were shrink fit in two counter bores, and then bored to fit the ram (.001" clearence). I suppose you could hard chrome the ram and grind it oversize (about .010". Then bore the housing to fit the ram. A lot of work!</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 503500, member: 25383"] the RCBS style of press depends on everything being in perfect alignment. A lot of variables there, but I suppose it can be done. The real problem with the design is that when the ram is being pushed up it tends to torque in two directions. Always felt there should have been a couple guides added in the housing to help keep the ram strait as it travels. A Forster uses two guide rods that are rigid. The die and case float for alignment. With long strait walled cases the press stays very strait (something like a 50-120) , and you can see this with the naked eye. These same cases are a bear with a Rockchucker, and cause undo wear in the housing bore. The average guy here would never see anything like this, but you might working with cases built off the "404" case size. I've installed bushings and reground the ram on a few RCBS and Hornaday/Pacific presses. You really need a good jig bore to do it, but a dead square knee mill will work just fine. I used Ampco 16 bronze bushings that were shrink fit in two counter bores, and then bored to fit the ram (.001" clearence). I suppose you could hard chrome the ram and grind it oversize (about .010". Then bore the housing to fit the ram. A lot of work! gary [/QUOTE]
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