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Rifles, Reloading, Optics, Equipment
Reloading
velocity issues
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<blockquote data-quote="Canadian Bushman" data-source="post: 910017" data-attributes="member: 41122"><p>Well if your case thickness has large variations in the neck and you size all the neck O.D.'s to .307, now those variations are transferred to the I.D. and result in variations in neck tension. </p><p></p><p>Now we dont know what your neck thickness is (unless i missed it). If its .012" and you sized your neck to .307 that infers the I.D. is .283. Thats a .001" press fit. Thats good. If its .014 that puts you at .279 (.005) which is pretty tight. </p><p>This could cause trouble! Likely you would have felt it seating bullets. Like i said ealier though this is only an estimated guess. </p><p></p><p>I personally want to think its a powder or primer problem because 100-200 fps is a large jump, and the variations in vertical impact are significant. Is there any way your scale could be acting up, or a possibility your powder or primers got damp?</p><p></p><p>Im not trying to be a know it all here, just brainstorming. Im sure we'd all like to get you back to whooping up on that 500yd target.</p></blockquote><p></p>
[QUOTE="Canadian Bushman, post: 910017, member: 41122"] Well if your case thickness has large variations in the neck and you size all the neck O.D.'s to .307, now those variations are transferred to the I.D. and result in variations in neck tension. Now we dont know what your neck thickness is (unless i missed it). If its .012" and you sized your neck to .307 that infers the I.D. is .283. Thats a .001" press fit. Thats good. If its .014 that puts you at .279 (.005) which is pretty tight. This could cause trouble! Likely you would have felt it seating bullets. Like i said ealier though this is only an estimated guess. I personally want to think its a powder or primer problem because 100-200 fps is a large jump, and the variations in vertical impact are significant. Is there any way your scale could be acting up, or a possibility your powder or primers got damp? Im not trying to be a know it all here, just brainstorming. Im sure we'd all like to get you back to whooping up on that 500yd target. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
velocity issues
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