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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: 132715" data-attributes="member: 2852"><p>I have run into this a bunch in my reloading of big cases (over .515" at the web).</p><p></p><p>From what I understand of your problem, the brass fits when new, then each successive reloading from there gets harder and harder to chamber and especially extract. If this is the case, I would say that the problem is in your FL die. It is short enough to bump the shoulder back (which if it's an RCBS die is flat out amazing) but it is incorrect dimensionally in the web area of the case. These big cases need clearance in the web area more than smaller cases. If your chamber is small to normal in the "arse" end and your die is large for spec in this area, cases go in snug to fine but are an absolute ^&amp;#*# to come out.</p><p></p><p>Check the diameter of the web of some virgin brass and then compare it to some that have been fired once and then to some that have been fired twice or three times. Then measure the web of some that have been fired a few times and have also been resized by your FL die. If there isn't much diff in the measurement of the sized brass vs. the 3x fired brass (.001-.002") than you have a chamber dimension to die dimension problem.</p><p></p><p>Remedy: get a new FL die. Preferably a Redding or custom.</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 132715, member: 2852"] I have run into this a bunch in my reloading of big cases (over .515" at the web). From what I understand of your problem, the brass fits when new, then each successive reloading from there gets harder and harder to chamber and especially extract. If this is the case, I would say that the problem is in your FL die. It is short enough to bump the shoulder back (which if it's an RCBS die is flat out amazing) but it is incorrect dimensionally in the web area of the case. These big cases need clearance in the web area more than smaller cases. If your chamber is small to normal in the "arse" end and your die is large for spec in this area, cases go in snug to fine but are an absolute ^&#*# to come out. Check the diameter of the web of some virgin brass and then compare it to some that have been fired once and then to some that have been fired twice or three times. Then measure the web of some that have been fired a few times and have also been resized by your FL die. If there isn't much diff in the measurement of the sized brass vs. the 3x fired brass (.001-.002") than you have a chamber dimension to die dimension problem. Remedy: get a new FL die. Preferably a Redding or custom. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Internal ballistics frustration.
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