Thread: What causes this

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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Dies are lee rgb
And yea my chamfering tool is 45deg

It's odd tho the projectiles only stick on the last mm or 2 till then they slide In well enough

I give up

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it would have to be the seating die wound in too far. From memory with one of the Lee dies I have you have to go slowly at the end, actually that might be the collet die.

Can you wind it out a bit so that the crimper is not engaging at all?
Sorry for the in-exactness of my post but I've just shot in for a cup. Capsuling 2 tooths today, yay

You've probably given me the answer Mate iv just gotta try cleaning the necks before lubing, mesure od before and after seating. Lube projectiles and reset seating die, clean it and look at buying a vld chamfer

Iv had enough of reloading for today, drives me nuts sometimes

the funny thing about the seating die is I was following the projectile back bit by bit back into the case. mesuring at each step,

im wondering now if my dies are not suited to vld type projectiles and to seat them back enough into the case causes the seating part of the die to contact the top of the case and cause the damage?

http://leeprecision.com/cgi-data/instruct/RM3508.pdf

I have done this myself
die set to deep it is trying to crimp as you are seating

So have you trimmed all your brass to the same length and set your die properly yet?

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nah mate iv loaded all my projectiles up for the ladder test, once i have a bit of good weather ill be back into seeing what load works
then ill load up the lot and update

Lubed the projectiles as I went tonight, pills slipped in much easier and problem seems solved as I can back off when needed on the pressure if their is a bind

Makes me think maybe I should be cleaning my cases, beyond looking professional is their any point to the case cleaners?

Yes, you wont get collapsed shoulders from excessive seating friction

hahaha

would be able to replace hundreds of collapsed shoulder cases before justifying the cost of the tumbler
any cheaper method for someone who dosent load many cases each year?

I done vinegar and baking soda one time years back but i dont like the idea that it could be compromising the powder once loaded up

Bronse bore brush in a drill up the necks

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I still find it kinda incredible you have that much neck tension you can collapse the case dirty or not.

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