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The Range
Ammo & Reloading
PPU matchline ammo 7.62x54
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<blockquote data-quote="swampratt" data-source="post: 3336290" data-attributes="member: 15054"><p>Nice that you posted all those numbers..Takes some doing to get ammo apart and measure all that.</p><p></p><p>A couple more measurement i found very useful is Neck ID and Neck OD.</p><p>I found if the ID is off .0005 on pulled rounds that that round will likely open the group.</p><p></p><p>Neck surface texture on the inside is also something I found makes a huge accuracy difference.</p><p>I had some crummy shooting .308 ammo all measurements were close one case had .0005" difference in ID ..I also noticed the powder looked like BLC-2 and 150gr bullets..In my testing 45.0gr was an accuracy node.</p><p>This stuff was over that ..I reduced the load to 45 and put them back together.</p><p>Tight grouping ammo after that.</p><p></p><p>When i was pulling various .223 and .556 ammo i found out of the same box some would let go of the bullet in a couple wacks of the inertia puller.</p><p>And some even after 15-20 wacks would not come apart.</p><p>That will not result in accurate ammo.</p></blockquote><p></p>
[QUOTE="swampratt, post: 3336290, member: 15054"] Nice that you posted all those numbers..Takes some doing to get ammo apart and measure all that. A couple more measurement i found very useful is Neck ID and Neck OD. I found if the ID is off .0005 on pulled rounds that that round will likely open the group. Neck surface texture on the inside is also something I found makes a huge accuracy difference. I had some crummy shooting .308 ammo all measurements were close one case had .0005" difference in ID ..I also noticed the powder looked like BLC-2 and 150gr bullets..In my testing 45.0gr was an accuracy node. This stuff was over that ..I reduced the load to 45 and put them back together. Tight grouping ammo after that. When i was pulling various .223 and .556 ammo i found out of the same box some would let go of the bullet in a couple wacks of the inertia puller. And some even after 15-20 wacks would not come apart. That will not result in accurate ammo. [/QUOTE]
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