Do I need a special seating die for the ELD-X?

[Seeking_Coyotes]

I'm loading some .260 Rem rounds with my standard RCBS die set. The shoulder of the Laupua brass is getting buckled/crushed. Tried moving the die out as far as it will go to seat the bullet but still crushing the brass. Guess I need some different type of seating die due to the nature of the long design of the bullet? Can anyone help and let me know if I am correct or if there is another issue perhaps?

Thanks,

Mike

 

[nonnieselman]

Is the brass deburred? I use a VLD chamfer tool and it makes it easy as pie.

Neck too tight? Expander on the sizer die in there?

Ive never crushed a neck seating a Boattail bullet. Now flatbase bullets, ill waste alot of brass...

Dumb question and not to insult your intelligence, but are you using 260 Dies and a .264" Bullet Correct?

Its kinda like trouble shooting a computer problem, Make sure its plugged into the wall first.

 

[Seeking_Coyotes]

Is the brass deburred? I use a VLD chamfer tool and it makes it easy as pie.

Neck too tight? Expander on the sizer die in there?

No idea if neck is too tight, used my standard RCBS resizing die? Expander is in place.

Ive never crushed a neck seating a Boattail bullet. Now flatbase bullets, ill waste alot of brass...

Dumb question and not to insult your intelligence, but are you using 260 Dies and a .264" Bullet Correct?

Yes. Good question.

Its kinda like trouble shooting a computer problem, Make sure its plugged into the wall first.

 

[nonnieselman]

What does the expander measure on the decapping stem?

 

[Sniper338]

ypur sizing is wrong somehow. probably the die.

 

[Seeking_Coyotes]

Cases are fine to COAL 2.840 then begin to crush at the shoulders moving to 2.80

 

[nonnieselman]

What happens if you loosen the die body 2 revolutions, and tighten the seater stem to get your desired COAL ?

Thinking back i have crushed a shoulder by having the die body threaded in the press too far.

 

[jimbires]

it sounds like the die body is to low . causing it to crimp .

 

[Dusty Stevens]

it sounds like the die body is to low . causing it to crimp .

Yep its crimping. Back out the die and turn in the seater stem

 

[Seeking_Coyotes]

Good idea. Tired moving the die out more but did not fix the problem. I moved to loading some 129 grain SST and Interbond bullets. When I had the bullet about 1/2 way seated I hit strong resistance. Rather than bull through (my usual method) I backed the die out and gradually kept moving it down and it was able to seat the bullets to .2.80 without crushing the shoulder. I am guessing maybe the neck is too tight from the regular resizing die? Quite the riddle...what do you guys think?

 

[cahunter805]

What does your fired case neck measure? Sized case neck? Neck thickness?

 

[Zero333]

You might of set up the seating die as you would a sizing die, to touch the shell holder.

Seating die is set up to touch case mouth, then back out a few turns. Big difference.

 

[jimbires]

Good idea. Tired moving the die out more but did not fix the problem. I moved to loading some 129 grain SST and Interbond bullets. When I had the bullet about 1/2 way seated I hit strong resistance. Rather than bull through (my usual method) I backed the die out and gradually kept moving it down and it was able to seat the bullets to .2.80 without crushing the shoulder. I am guessing maybe the neck is too tight from the regular resizing die? Quite the riddle...what do you guys think?

remove the seating die . put a piece of sized brass in the press . raise the brass completely . put the seating die in , and turn it down until it touches the brass case . NOW TURN THE DIE UP 2 FULL TURNS and lock the lock ring . now adjust the seating stem only to get the bullet seated to your desired depth .

 

[Seeking_Coyotes]

What does your fired case neck measure? Sized case neck? Neck thickness?

Can I measure it accurately by just putting the calipers on the outside of a resized case and the outside of a fired case? What will it tell me and what should it read compared to each other? Thanks.

 

[Seeking_Coyotes]

remove the seating die . put a piece of sized brass in the press . raise the brass completely . put the seating die in , and turn it down until it touches the brass case . NOW TURN THE DIE UP 2 FULL TURNS and lock the lock ring . now adjust the seating stem only to get the bullet seated to your desired depth .

Thank you

 

[Bc'z]

Mine measure .290 sized. Wall thickness of brass .0145 x2 walls, gives me a loaded round of .293.
I believe works out to .002-.003 neck tention

 

[TikkaSporter]

...When I had the bullet about 1/2 way seated I hit strong resistance. Rather than bull through (my usual method) I backed the die out and gradually kept moving it down and it was able to seat the bullets to .2.80 without crushing the shoulder. I am guessing maybe the neck is too tight from the regular resizing die? Quite the riddle...what do you guys think?

Starting to sound like a donut issue. Do you hit strong resistance somewhere close to where the bearing surface of the bullet contacts the neck-shoulder junction?

 

[Metal God]

Starting to sound like a donut issue.

That was my thinking when I read the quote about the other bullet hitting resistance . Are these 308 cases sized down to 260 ? If so that can give you a donut on the inside of the case at the neck/shoulder junction causing that area to be narrower then the rest of the inside neck diameter .

If 260 brass it becomes less likely it's a donut issue but still possible .