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Rifles, Reloading, Optics, Equipment
Reloading
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<blockquote data-quote="Trickymissfit" data-source="post: 607045" data-attributes="member: 25383"><p>wear is caused by a lot more than lack of lube. Torquing or twisting of the ram as it comes under pressure will cause uneven wear. It something that is in every known press in the world, wether it bee a 600 ton Verson of an RCBS Partner. It's gonna happen. If you have nothing to stablize the ram during movment, and even more when under pressure you will see the bore develop an eleptical bore. Then you add in varibles like threads and being out of square (nothing can be made perfect). If you can screw something into a female thread, it's gonna move because there's clearence between the male and female thread. How much depends on the quality of the threads. You use a pair of guide rods on the Forster, but they also have clearence built into them. Every dodad that you add to the press creates an option for error (shell holder, indexing top plate, etc). That's basic engineering. The trick is to have the die as square as you can under max pressure and also keep the case as square as you can to the centerline of the die. Some presses do this better than others of course</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 607045, member: 25383"] wear is caused by a lot more than lack of lube. Torquing or twisting of the ram as it comes under pressure will cause uneven wear. It something that is in every known press in the world, wether it bee a 600 ton Verson of an RCBS Partner. It's gonna happen. If you have nothing to stablize the ram during movment, and even more when under pressure you will see the bore develop an eleptical bore. Then you add in varibles like threads and being out of square (nothing can be made perfect). If you can screw something into a female thread, it's gonna move because there's clearence between the male and female thread. How much depends on the quality of the threads. You use a pair of guide rods on the Forster, but they also have clearence built into them. Every dodad that you add to the press creates an option for error (shell holder, indexing top plate, etc). That's basic engineering. The trick is to have the die as square as you can under max pressure and also keep the case as square as you can to the centerline of the die. Some presses do this better than others of course gary [/QUOTE]
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