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The Range
Ammo & Reloading
Primer pocket tightening
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<blockquote data-quote="swampratt" data-source="post: 3267992" data-attributes="member: 15054"><p>I read on another forum how a guy tightened his 300 WM primer pockets and it holds well for more than one firing.</p><p></p><p>He took a 1/4" grade 8 hard bolt and stuck it into the case and put tape around the shank so it centered good in the neck area.</p><p></p><p>Then take a 1/2" or 3/4 hard ball bearing place the case primer pocket onto the bearing.</p><p>The bearing should be secured in a vise or on a steel plate with a hole drilled into it to hold the ball bearing.</p><p>Tap the 1/4" bolt with a hammer.</p><p>This pinches the primer pocket tighter.. measure diameter before and after.</p><p></p><p>A couple taps is all most cases took. Depending on how hard you hit it I suppose.</p><p>Start soft and work your way up.</p><p></p><p>Thought I would share.</p></blockquote><p></p>
[QUOTE="swampratt, post: 3267992, member: 15054"] I read on another forum how a guy tightened his 300 WM primer pockets and it holds well for more than one firing. He took a 1/4" grade 8 hard bolt and stuck it into the case and put tape around the shank so it centered good in the neck area. Then take a 1/2" or 3/4 hard ball bearing place the case primer pocket onto the bearing. The bearing should be secured in a vise or on a steel plate with a hole drilled into it to hold the ball bearing. Tap the 1/4" bolt with a hammer. This pinches the primer pocket tighter.. measure diameter before and after. A couple taps is all most cases took. Depending on how hard you hit it I suppose. Start soft and work your way up. Thought I would share. [/QUOTE]
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