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Rifles, Reloading, Optics, Equipment
Reloading
Trimming case length, how much does it really matter?
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<blockquote data-quote="Mikecr" data-source="post: 976613" data-attributes="member: 1521"><p>There are further qualifiers to gas sealing and it's only one factor. It does depend on cartridge & load.</p><p>And it does 'seem' like a neck mouth further from the throat would see less gas before sealing.</p><p>But often reality is just opposite.</p><p></p><p>If you take something like a 243Win, typical neck clearances and seated off the lands, load it LO-pressure, and vary trim lengths, you'll see sooting follow. It can go from little to half way down shoulders or more as you trim more & more away.</p><p>Sometimes the gas blow-by can pocket and cause a case dimple.</p><p></p><p>As with all things, there are prices for them.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 976613, member: 1521"] There are further qualifiers to gas sealing and it's only one factor. It does depend on cartridge & load. And it does 'seem' like a neck mouth further from the throat would see less gas before sealing. But often reality is just opposite. If you take something like a 243Win, typical neck clearances and seated off the lands, load it LO-pressure, and vary trim lengths, you'll see sooting follow. It can go from little to half way down shoulders or more as you trim more & more away. Sometimes the gas blow-by can pocket and cause a case dimple. As with all things, there are prices for them. [/QUOTE]
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Reloading
Trimming case length, how much does it really matter?
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