These are projectiles ive pulled with a kinetic hammer out of old 303 cordite rounds, so these will be .311 if im not mistaken?
Not sure how neck tension is measured, but they appear pretty tight.
Will the diameter of the die be stamped anywhere on it?
The load is ever so slightly compressed, not filled to the brim or anything, (about 5mm or more below the brim), I guess I could test this with an empty case to confirm if its that to blame.
I should also add that this is not happening with every single round, perhaps about quarter of them are doing this.
Its a new Lee die set, have used various projectiles, but mostly have been loading pulled flat bottom ones from cordite CAC ammo.
Im glad it looks new to you, this is once fired HXP that i polished in my tumbler, as above, only slightly compressed using pulled .311 303 bullets.
Is there any way to adjust neck tension? Pretty new to reloading here.
As above, once fired HXP, I also have FL sized this brass. Im looking to neck size only going forward however.
Im wondering if i need to run some fine emery paper in the die itself? This is also supposed to remove the ring marks that it sometimes leaves on the top of the bullet, only a cosmetic thing i know, but may help stop the die from grabbing the bullets.
Im wondering if its due to this die set being new and needs to bed in a bit too?




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