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Rifles, Reloading, Optics, Equipment
Reloading
25 wssm
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<blockquote data-quote="Lefty7mmstw" data-source="post: 865945" data-attributes="member: 48043"><p>I have a caliper on a (243wssm reform to 25wssm) round right now and it's .295" at the top of the neck and .296" at the bottom with a 100 grain sierra in the neck. Another measures .296" from top to bottom- also with a 100 grain sierra.There's enough slop in the chamber to wash .001" out. Max. spec in the hornady book is .299 for neck dimension. These brass have been fired and trimmed a couple of times and I'm not sure if they are at the same firing count; likely not as they are in a mixed headstamp box--had a few neck cracks with 25's and filled the box with re-forms. That box is full of sierra 100 gr. pro hunters at 3300 fps with 52.0 gr. Superformance under it lit with a 210. Usually I let the rifle loaf at 3150 with a 100 (or 2850 with a 120), but she screams with that stuff and still holds moa.</p><p> </p><p>It might actually thin the necks out a bit with the necking down. The softer bullets darn near deform stuffing 25wssm brass.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 865945, member: 48043"] I have a caliper on a (243wssm reform to 25wssm) round right now and it's .295" at the top of the neck and .296" at the bottom with a 100 grain sierra in the neck. Another measures .296" from top to bottom- also with a 100 grain sierra.There's enough slop in the chamber to wash .001" out. Max. spec in the hornady book is .299 for neck dimension. These brass have been fired and trimmed a couple of times and I'm not sure if they are at the same firing count; likely not as they are in a mixed headstamp box--had a few neck cracks with 25's and filled the box with re-forms. That box is full of sierra 100 gr. pro hunters at 3300 fps with 52.0 gr. Superformance under it lit with a 210. Usually I let the rifle loaf at 3150 with a 100 (or 2850 with a 120), but she screams with that stuff and still holds moa. It might actually thin the necks out a bit with the necking down. The softer bullets darn near deform stuffing 25wssm brass. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
25 wssm
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