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Rifles, Reloading, Optics, Equipment
Reloading
257 Weatherby case sizing
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<blockquote data-quote="Philward" data-source="post: 2606090" data-attributes="member: 92604"><p>After firing some recent test loads using once fired cases that I just prepped at beginning of this thread, I checked the headspace measurement of the fired ones using the Hornady D comparator and they were 2.1055-2.106". The other cases that I had sized at same time as the ones I checked just now were 2.107". The loaded rounds were snug but not real tight to close the bolt. When sizing them before, the press was camming over with lots of tension. So today I measured the cases, fired ones and ready to load ones and after seeing the discrepancy started measuring shell holders, I have a #4 and #43 only difference was 0.0015 difference in height of the top flange, where it would rest on top of RAM on bottom and top surface where it would touch the die. I already tried a 0.0025" feeler gauge under the case when sizing and it showed some improvement but not enough. So I made a 0.005" shim from brass stock I have and sized one of the fired cases. After about 3 adjustments of the die I achieved a shoulder bump to 2.103. Tried case in rifle and bolt closed easily, no drag or resistance. It seems I may have a short chamber or the die is a little long. Press is still camming over but not real tight or hard. So I guess I'll be sizing with a 0.005" shim from here forward. And just fyi new cases are 2.0955" using the D comparator from Hornady.</p></blockquote><p></p>
[QUOTE="Philward, post: 2606090, member: 92604"] After firing some recent test loads using once fired cases that I just prepped at beginning of this thread, I checked the headspace measurement of the fired ones using the Hornady D comparator and they were 2.1055-2.106". The other cases that I had sized at same time as the ones I checked just now were 2.107". The loaded rounds were snug but not real tight to close the bolt. When sizing them before, the press was camming over with lots of tension. So today I measured the cases, fired ones and ready to load ones and after seeing the discrepancy started measuring shell holders, I have a #4 and #43 only difference was 0.0015 difference in height of the top flange, where it would rest on top of RAM on bottom and top surface where it would touch the die. I already tried a 0.0025" feeler gauge under the case when sizing and it showed some improvement but not enough. So I made a 0.005" shim from brass stock I have and sized one of the fired cases. After about 3 adjustments of the die I achieved a shoulder bump to 2.103. Tried case in rifle and bolt closed easily, no drag or resistance. It seems I may have a short chamber or the die is a little long. Press is still camming over but not real tight or hard. So I guess I'll be sizing with a 0.005" shim from here forward. And just fyi new cases are 2.0955" using the D comparator from Hornady. [/QUOTE]
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Reloading
257 Weatherby case sizing
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