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Rifles, Reloading, Optics, Equipment
Reloading
300 Win Mag Headspace
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<blockquote data-quote="bigedp51" data-source="post: 1488166" data-attributes="member: 28965"><p>Rimmed and belted cases date from a time when manufacturing methods were not at the same standards and quality of today's cartridges. And the first British belted case was around 1910 and it was needed because of the smaller shoulder of these cases for reliably feeding and headspacing.</p><p></p><p>Below a rimmed 450 martini-henry cartridge, on the left a modern made cartridge and on the right a cartridge from 1879 and the British Zulu wars.</p><p></p><p><img src="https://i.imgur.com/sDrsB0Q.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>And you still not have explained why "YOU" think that head clearance does not matter on a belted case. You keep side stepping the question and filling your postings with bovine skat that has nothing to do with the subject. Or "WHY" you think a belted case does not need a false shoulder or be jammed if it has excessive head clearance.</p><p></p><p>Headspace is one thing and head clearance is a separate issue that has to due with cartridge case manufacturing tolerances.</p><p></p><p>You just don't get it, I have had brand new cases over .009 shorter than my GO gauge. And these short cases were jammed into the rifling to keep them from stretching the first firing. And if the case stretches on its first firing it will be very short lived. And a belted case with chamber and case variations can have as much as .012 head clearance.</p><p></p><p>And again if the belt was so important why do reloaders let the belted case headspace on its shoulder to get longer case life.</p><p></p><p>And this is why your posting below is pure BS and misleading to anyone reading it and just plain bad bad advice.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1488166, member: 28965"] Rimmed and belted cases date from a time when manufacturing methods were not at the same standards and quality of today's cartridges. And the first British belted case was around 1910 and it was needed because of the smaller shoulder of these cases for reliably feeding and headspacing. Below a rimmed 450 martini-henry cartridge, on the left a modern made cartridge and on the right a cartridge from 1879 and the British Zulu wars. [IMG]https://i.imgur.com/sDrsB0Q.jpg[/IMG] And you still not have explained why "YOU" think that head clearance does not matter on a belted case. You keep side stepping the question and filling your postings with bovine skat that has nothing to do with the subject. Or "WHY" you think a belted case does not need a false shoulder or be jammed if it has excessive head clearance. Headspace is one thing and head clearance is a separate issue that has to due with cartridge case manufacturing tolerances. You just don't get it, I have had brand new cases over .009 shorter than my GO gauge. And these short cases were jammed into the rifling to keep them from stretching the first firing. And if the case stretches on its first firing it will be very short lived. And a belted case with chamber and case variations can have as much as .012 head clearance. And again if the belt was so important why do reloaders let the belted case headspace on its shoulder to get longer case life. And this is why your posting below is pure BS and misleading to anyone reading it and just plain bad bad advice. [/QUOTE]
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Reloading
300 Win Mag Headspace
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