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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Internal ballistics frustration.
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<blockquote data-quote="goodgrouper" data-source="post: 132810" data-attributes="member: 2852"><p>[ QUOTE ]</p><p> When fifed they are .547". After resizing they are .547". Would that contribute to this problem despite them chambering easily? </p><p></p><p>[/ QUOTE ] </p><p></p><p></p><p>Bingo! You have the problem I mentioned. I absolutely positively guarantee it. The reason they go in ok is due to the taper in the case from the head to the shoulder. It is shaped to go in ok, but is opposite of what it needs to be to come out as easy. </p><p></p><p>Your brass started out undersized enough to get by with some possible hot loads, but after a few firings, it got blown out .002" and was not being sized back in enough to afford enough clearance. Your die is pushing the shoulder back plenty, it's just not squeezing in the body at all. Or if it is, it is not squeezing it in enough to offset the spring back in the brass.</p><p></p><p>Get a Redding FL die and see if it squeezes it enough. If it doesn't, a custom die made from your brass will work marvelously.</p><p></p><p>BTW, on my 338 thunder dies, I had to have them made to squeeze in the web area about .003" to give .001"-.00075" clearance on a chambered round after springback. Until that clearance was there, it was super hard to extract cases. The fatter and straighter a case is, the more likely it is that extraction problems will be encountered.</p><p></p><p>Hope this helps. </p><p>Good luck.</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 132810, member: 2852"] [ QUOTE ] When fifed they are .547". After resizing they are .547". Would that contribute to this problem despite them chambering easily? [/ QUOTE ] Bingo! You have the problem I mentioned. I absolutely positively guarantee it. The reason they go in ok is due to the taper in the case from the head to the shoulder. It is shaped to go in ok, but is opposite of what it needs to be to come out as easy. Your brass started out undersized enough to get by with some possible hot loads, but after a few firings, it got blown out .002" and was not being sized back in enough to afford enough clearance. Your die is pushing the shoulder back plenty, it's just not squeezing in the body at all. Or if it is, it is not squeezing it in enough to offset the spring back in the brass. Get a Redding FL die and see if it squeezes it enough. If it doesn't, a custom die made from your brass will work marvelously. BTW, on my 338 thunder dies, I had to have them made to squeeze in the web area about .003" to give .001"-.00075" clearance on a chambered round after springback. Until that clearance was there, it was super hard to extract cases. The fatter and straighter a case is, the more likely it is that extraction problems will be encountered. Hope this helps. Good luck. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Internal ballistics frustration.
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