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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity - setting up dies - runout
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<blockquote data-quote="RDM416" data-source="post: 505125" data-attributes="member: 3745"><p>boomtube, You and I pretty much agree on this...... I do not propose the "rotate" method will fix large or even moderate amounts of runout. All the the other things mentioned, O-rings, leaving dies a little lose, etc are all tricks in my toolbox for minimizing runout. My normal setup uses a Forster co-ax press for sizing with a custom die, then seating with a Redding competition die on an RCBS press. </p><p></p><p>I think the most important part of my process is the "light tap on the bullet, then rotate and repeat several times". This seems to be quite effective at getting the bullet started straight. All the rest may actually be overkill. I certainly agree that once the bullet has gotten started crooked (at least more than 2 or 3 thou) that there is little that can be done (in the die anyway) to fix that. </p><p></p><p>To sum it up...... My experience with this shows me I can take an already good, .002 or .003 runout setup and reduce it by .002 or so. I agree you are not likely to fix larger issues doing this, and it is certainly not a cure-all for runout issues. This method is certainly not a fix for bad dies or a sloppy setup, simply a fine tune for already good loads. IMHO. </p><p></p><p>+1 on the Sinclair concentricity gauge.</p><p></p><p>dig, See this little "discussion" between boomtube and I? If nothing else, you can learn from this that although the basics remain the same, you will in time develop your own style of loading. Some get real picky about runout, some about weighing powder, some with bullet and case sorting, neck tension, etc........ Some are picky about all of it. At the same time you can find someone (who is a very good shooter) who will say that one or the other of those things don't matter enough to bother with and they don't do it. I am usually not in a hurry when loading so I take the time to control as many steps with as much precision as possible. In the end, all error is additive. One small bit of error in one step may not matter, but fixing that one may make up for the one you did not or could not fix.</p></blockquote><p></p>
[QUOTE="RDM416, post: 505125, member: 3745"] boomtube, You and I pretty much agree on this...... I do not propose the "rotate" method will fix large or even moderate amounts of runout. All the the other things mentioned, O-rings, leaving dies a little lose, etc are all tricks in my toolbox for minimizing runout. My normal setup uses a Forster co-ax press for sizing with a custom die, then seating with a Redding competition die on an RCBS press. I think the most important part of my process is the "light tap on the bullet, then rotate and repeat several times". This seems to be quite effective at getting the bullet started straight. All the rest may actually be overkill. I certainly agree that once the bullet has gotten started crooked (at least more than 2 or 3 thou) that there is little that can be done (in the die anyway) to fix that. To sum it up...... My experience with this shows me I can take an already good, .002 or .003 runout setup and reduce it by .002 or so. I agree you are not likely to fix larger issues doing this, and it is certainly not a cure-all for runout issues. This method is certainly not a fix for bad dies or a sloppy setup, simply a fine tune for already good loads. IMHO. +1 on the Sinclair concentricity gauge. dig, See this little "discussion" between boomtube and I? If nothing else, you can learn from this that although the basics remain the same, you will in time develop your own style of loading. Some get real picky about runout, some about weighing powder, some with bullet and case sorting, neck tension, etc........ Some are picky about all of it. At the same time you can find someone (who is a very good shooter) who will say that one or the other of those things don't matter enough to bother with and they don't do it. I am usually not in a hurry when loading so I take the time to control as many steps with as much precision as possible. In the end, all error is additive. One small bit of error in one step may not matter, but fixing that one may make up for the one you did not or could not fix. [/QUOTE]
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Concentricity - setting up dies - runout
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