RCBS Competition Seater in Forster Co-Ax

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oneadam12

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Like the title says, I have a .308 RCBS Competition seating die, and upgraded to a Forster Co-Ax press. Yay, no more shell holders. But wait, the seating die has an extended shell holder... Aw nuts. Do I need to use the extended shell holder with this die in the Co-Ax?

Or am I better off going with a different seating die and hawking the RCBS seater?

I'm planning on getting a file trim die from Redding so maybe I need the extended shell holder anyway. I was hoping to find one I could just sit on the bench flat, but I don't think that exists. And no, I don't want a hand crank trimmer.
 
Why do those dies require the extended shellholder? (I'm not familiar with them.)

Or just get the adapter from Forster.....
 
The dies coupled with the press. The way the die body works, and the depth it needs the case inserted. You can't thread the die into the press further because it has a window you stick the bullet into from the side, unlike the Forster and Redding micrometer seating dies that work similarly but load from the bottom like a conventional seating die.

Using the adapter defeats half the advantage of the Co-Ax, which works in part because die and case 'float'. The adapter plate takes the floating case part out of the equation.
 
i wonder if you could make the shell extension fit into the floating jaws of the co-ox press? it might make for to much wobble though.
 
oneadam12 said:
The dies coupled with the press. The way the die body works, and the depth it needs the case inserted. You can't thread the die into the press further because it has a window you stick the bullet into from the side, unlike the Forster and Redding micrometer seating dies that work similarly but load from the bottom like a conventional seating die.

Using the adapter defeats half the advantage of the Co-Ax, which works in part because die and case 'float'. The adapter plate takes the floating case part out of the equation.
Click to expand...


Ahhh, yes, I see. Bummer, although perhaps the amount of "float" in the die be enough to make up for the "solidity" of the shellholder? Just a thought, as I don't have the shellholder adapter for mine either.....
 
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