Thread: What causes this

it only happens when i think it needs to go a mm more than it wants to.
then instead of the stroke continueing differcltly it gets real easy while it crumples

is it possibel it is caused from excess lube on the outside of the case neck causing that grip?

it happened on the first case today 243 and mid run of the 280
only one every now and then

Originally Posted by Bill999

it only happens when i think it needs to go a mm more than it wants to.
then instead of the stroke continueing differcltly it gets real easy while it crumples

This sounds like the neck touching the crimp part of the die to me as in my other post .

The die is trying to crimp the case mouth into a canalure on the projectile that isn't there and you are still trying to force the projectile deeper.
You would have to have massively under size necks to do this. Are you full length sizeing? And if so is the expander in it?
The fl die sizes down too small then expands it back up on the withdraw stroke.



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