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Hunting
Long Range Hunting & Shooting
1000 yds...Next step?
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<blockquote data-quote="Bart B" data-source="post: 659439" data-attributes="member: 5302"><p>In response to my comments about proper full length sizing vs. neck only sizing aligning cases the same:Most everything written about that is based on assumptions. If one actually measures the difference between both sizing methods' aligning bullets in the bore, you'll see there's no difference. Without measuring, it's easy to see that when the firing pin drives the case forward in the chamber, its shoulder centers perfectly in the chamber shoulder regardless of how much clearance there is around the case body at that point. And the back end of the case is pressed against the chamber by the extractor pushing it there. That's where rimless bottleneck cases are when they're fired. In my own tests comparing neck only and full length sized cases with the loaded round's shoulder centered in a hole like it is in the chamber, full length sized ones center the case neck better on the shoulder than neck only sized ones.</p><p></p><p>And no two cases are exactly the same, either. Both chambers and cases are a tiny bit out of round.</p></blockquote><p></p>
[QUOTE="Bart B, post: 659439, member: 5302"] In response to my comments about proper full length sizing vs. neck only sizing aligning cases the same:Most everything written about that is based on assumptions. If one actually measures the difference between both sizing methods' aligning bullets in the bore, you'll see there's no difference. Without measuring, it's easy to see that when the firing pin drives the case forward in the chamber, its shoulder centers perfectly in the chamber shoulder regardless of how much clearance there is around the case body at that point. And the back end of the case is pressed against the chamber by the extractor pushing it there. That's where rimless bottleneck cases are when they're fired. In my own tests comparing neck only and full length sized cases with the loaded round's shoulder centered in a hole like it is in the chamber, full length sized ones center the case neck better on the shoulder than neck only sized ones. And no two cases are exactly the same, either. Both chambers and cases are a tiny bit out of round. [/QUOTE]
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