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Rifles, Reloading, Optics, Equipment
Reloading
Neck Concentricity Help
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<blockquote data-quote="esshup" data-source="post: 221390" data-attributes="member: 11101"><p>O.K., here's what I did, and the results:</p><p> </p><p>Polished the expander ball, and left the stem loose in the threaded insert that threads into the die body. Lubed new brass that has .001 run-out and neck sized. .006" run-out. Tried tightening up the threaded insert, and left the lock nut loose. Sized another new piece of brass, same result. (well, .005")</p><p> </p><p>Rotated the shell holder from the opening @ 8:00 to 4:30. Sized another new piece of brass with the stem lock nut loose. .002" run-out. Tried rotating the shell holder to different clock positions, and got between .004" to .006" run-out, with the exception of the opening @ 11:00. Then the run-out is back to .002.</p><p> </p><p>I cleaned between all the mating pieces, and no change (it wasn't dirty, but you never know.....)</p><p> </p><p>I tried loosening the lock-nut on the die body and letting that float in the press along with the expander ball stem float in the die body - .003" run-out.</p><p> </p><p>These are total run-out numbers - the complete movement of the pointer on the concentricity gauge.</p><p> </p><p>I give up! Suggestions??</p><p> </p><p>Update:</p><p>AAAARRRGGG!!!!! I called RCBS and Brian there said: "If you're reloading, I don't think you can get better than .003" total run-out. You can send the press back so we can check the ram to die body alignment if you want." I didn't have the heart to say he was full of.....</p><p> </p><p>I'm about to order a new shellholder and bushing neck sizer. What size bushings should I order?</p><p>Loaded round neck O.D. is .282"</p><p> </p><p>I don't have time to send the stuff back, but I doubt that the press is the problem because when I load the .300 Win Mag I can get .001" TIR.......</p></blockquote><p></p>
[QUOTE="esshup, post: 221390, member: 11101"] O.K., here's what I did, and the results: Polished the expander ball, and left the stem loose in the threaded insert that threads into the die body. Lubed new brass that has .001 run-out and neck sized. .006" run-out. Tried tightening up the threaded insert, and left the lock nut loose. Sized another new piece of brass, same result. (well, .005") Rotated the shell holder from the opening @ 8:00 to 4:30. Sized another new piece of brass with the stem lock nut loose. .002" run-out. Tried rotating the shell holder to different clock positions, and got between .004" to .006" run-out, with the exception of the opening @ 11:00. Then the run-out is back to .002. I cleaned between all the mating pieces, and no change (it wasn't dirty, but you never know.....) I tried loosening the lock-nut on the die body and letting that float in the press along with the expander ball stem float in the die body - .003" run-out. These are total run-out numbers - the complete movement of the pointer on the concentricity gauge. I give up! Suggestions?? Update: AAAARRRGGG!!!!! I called RCBS and Brian there said: "If you're reloading, I don't think you can get better than .003" total run-out. You can send the press back so we can check the ram to die body alignment if you want." I didn't have the heart to say he was full of..... I'm about to order a new shellholder and bushing neck sizer. What size bushings should I order? Loaded round neck O.D. is .282" I don't have time to send the stuff back, but I doubt that the press is the problem because when I load the .300 Win Mag I can get .001" TIR....... [/QUOTE]
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Neck Concentricity Help
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