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Rifles, Reloading, Optics, Equipment
Reloading
Brass splitting at neck/shoulder. Lots of pics.
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<blockquote data-quote="Bullet bumper" data-source="post: 862159" data-attributes="member: 17844"><p>So you are saying that you size the necks without any lube ?? </p><p>If that is what you are saying then the necks are going to be work hardened a lot and the brass may have been very hard before you got it ! Very hard necks sitting around loaded (under stress ) for a year adds extra hardness but the cracking is on the shoulder not the neck so maybe the neck sizing without lube is flexing the necks enough to start the cracks more than anything else . I also think that the brass has impurities in it . However I think several things are working together .</p><p>A good dry lube for neck sizing is 50% Moly powder and 50% graphite mix.</p><p>To further reduce friction on the necks polish up inside the case necks with a clean bore brush wrapped in a thin layer of wire wool . Chuck it in an electric screw driver and go in and out a few times. Then polish up the outside of the case neck with wire wool. When you add the dry lube into the mix the sizing job will be much easier on the case necks in future .</p><p>Ammo loaded for a year is quite ok if the brass is soft and good quality to start with but your neck tension will be higher and more inconsistent then when it was first loaded but add this year to already hard necks .</p></blockquote><p></p>
[QUOTE="Bullet bumper, post: 862159, member: 17844"] So you are saying that you size the necks without any lube ?? If that is what you are saying then the necks are going to be work hardened a lot and the brass may have been very hard before you got it ! Very hard necks sitting around loaded (under stress ) for a year adds extra hardness but the cracking is on the shoulder not the neck so maybe the neck sizing without lube is flexing the necks enough to start the cracks more than anything else . I also think that the brass has impurities in it . However I think several things are working together . A good dry lube for neck sizing is 50% Moly powder and 50% graphite mix. To further reduce friction on the necks polish up inside the case necks with a clean bore brush wrapped in a thin layer of wire wool . Chuck it in an electric screw driver and go in and out a few times. Then polish up the outside of the case neck with wire wool. When you add the dry lube into the mix the sizing job will be much easier on the case necks in future . Ammo loaded for a year is quite ok if the brass is soft and good quality to start with but your neck tension will be higher and more inconsistent then when it was first loaded but add this year to already hard necks . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Brass splitting at neck/shoulder. Lots of pics.
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