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Rifles, Reloading, Optics, Equipment
Equipment Discussions
Reload belted magnum cases 20 times now.
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<blockquote data-quote="Innovative" data-source="post: 42700" data-attributes="member: 527"><p>Littletoes,</p><p> Wow ... with a name like that you've got to be good. Measure your fired cases "just above" the belt. Compare the diameter in this area to a new unfired cartridge. I have not seen a belted magnum case that didn't expand in this area after each firing. Eventually it will become your "exact" chamber size. When that happens, conventional resizing dies can not restore the diameter in this area. Five reloadings with one case is extremely rare. Be sure to track one particular case to be sure that you know how many times it is fired.</p><p> After 20 firings my cases look great ... but I'll toss them at that point because the necks are getting a bit work hardened. Uniform neck tension is important for accuracy. There is no visible sign of weakness or expansion "just above" the belt ... it must be measured. The sharp pick test is a very good one. If you are headspacing properly on the shoulder, you should not find a problem within the first 20 firings but it's a good practice to check. Split cases are usually caused by not headspacing on the shoulder and/or not cleaning all of the resizing lube off your cases. Read the magazine article on my website and you will see what most reloaders of belted magnums have found.</p></blockquote><p></p>
[QUOTE="Innovative, post: 42700, member: 527"] Littletoes, Wow ... with a name like that you've got to be good. Measure your fired cases "just above" the belt. Compare the diameter in this area to a new unfired cartridge. I have not seen a belted magnum case that didn't expand in this area after each firing. Eventually it will become your "exact" chamber size. When that happens, conventional resizing dies can not restore the diameter in this area. Five reloadings with one case is extremely rare. Be sure to track one particular case to be sure that you know how many times it is fired. After 20 firings my cases look great ... but I'll toss them at that point because the necks are getting a bit work hardened. Uniform neck tension is important for accuracy. There is no visible sign of weakness or expansion "just above" the belt ... it must be measured. The sharp pick test is a very good one. If you are headspacing properly on the shoulder, you should not find a problem within the first 20 firings but it's a good practice to check. Split cases are usually caused by not headspacing on the shoulder and/or not cleaning all of the resizing lube off your cases. Read the magazine article on my website and you will see what most reloaders of belted magnums have found. [/QUOTE]
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Reload belted magnum cases 20 times now.
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