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Rifles, Reloading, Optics, Equipment
Reloading
300 rum load development
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<blockquote data-quote="vancewalker007" data-source="post: 1584418" data-attributes="member: 66917"><p>On your case issues, you seem to have brass flowing such that you are heavily working the case near the web (the thicker portion) near the base. This could be because of the way you are prepping your brass. and or the nature of your chamber. Under normal mechanics the brass flows forward in the chamber. If pressure is high or there is no room on the front end the brass can flow in the reverse direction causing ejector marks and primer issues .</p><p></p><p>If this is happening with new brass try full length resizing the new brass with a .001 to .002 shoulder bump. Trim it .001 under the trim to length . These steps will make sure the brass can flow forward and use a powder load that is below the max. If this is reverse flow issue has happened with new brass you can get a case bulge just forward of the web . It will appear like a dark ring on the case and FL sizing will never completely remove it . We used to get head separations on 7 STWs there. </p><p></p><p>The bottom line is to stop the bulging and rearward brass flow you have to prep your brass to allow room at the should and case mouth .</p><p></p><p>This will also give you more stable pressures .</p></blockquote><p></p>
[QUOTE="vancewalker007, post: 1584418, member: 66917"] On your case issues, you seem to have brass flowing such that you are heavily working the case near the web (the thicker portion) near the base. This could be because of the way you are prepping your brass. and or the nature of your chamber. Under normal mechanics the brass flows forward in the chamber. If pressure is high or there is no room on the front end the brass can flow in the reverse direction causing ejector marks and primer issues . If this is happening with new brass try full length resizing the new brass with a .001 to .002 shoulder bump. Trim it .001 under the trim to length . These steps will make sure the brass can flow forward and use a powder load that is below the max. If this is reverse flow issue has happened with new brass you can get a case bulge just forward of the web . It will appear like a dark ring on the case and FL sizing will never completely remove it . We used to get head separations on 7 STWs there. The bottom line is to stop the bulging and rearward brass flow you have to prep your brass to allow room at the should and case mouth . This will also give you more stable pressures . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 rum load development
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