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Rifles, Reloading, Optics, Equipment
Reloading
Accuracy problems with 30-378 dies
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<blockquote data-quote="canderson" data-source="post: 196135" data-attributes="member: 10891"><p>I have been using a standard RCBS FL die set. Reloaded ammunition has been shooting between .5 -.75" @100 yds with a very good rest. Just started checking the ammo with a concentricity gauge and have found 4-7 thou run out. Fired case have very little runout in the neck and the body (1-3 thou). FL sized case seem to have about 3 thou runout in the neck. The bullets are barnes tsx both 150 and 180 grain bullets. I am measuring the loaded rounds about half way between the meplet and where the ogive begins. My reasoning is that this spot would exaggerate any runout. I have a theory that the runout may be causing some of the dispersion in my groups. Am I measuring in the wrong spot? Does anyone have any suggestions? A new seating die or should I start over with a new/different die set (maybe a bushing die set)? Any help would be greatly appreciated. Is there a limit on the accuracy to expect from the factory Accumark rifle?</p><p> </p><p>Thanks,</p><p>Chris</p></blockquote><p></p>
[QUOTE="canderson, post: 196135, member: 10891"] I have been using a standard RCBS FL die set. Reloaded ammunition has been shooting between .5 -.75" @100 yds with a very good rest. Just started checking the ammo with a concentricity gauge and have found 4-7 thou run out. Fired case have very little runout in the neck and the body (1-3 thou). FL sized case seem to have about 3 thou runout in the neck. The bullets are barnes tsx both 150 and 180 grain bullets. I am measuring the loaded rounds about half way between the meplet and where the ogive begins. My reasoning is that this spot would exaggerate any runout. I have a theory that the runout may be causing some of the dispersion in my groups. Am I measuring in the wrong spot? Does anyone have any suggestions? A new seating die or should I start over with a new/different die set (maybe a bushing die set)? Any help would be greatly appreciated. Is there a limit on the accuracy to expect from the factory Accumark rifle? Thanks, Chris [/QUOTE]
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Reloading
Accuracy problems with 30-378 dies
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