Cpt Curl,

The RCBS cowboy die is used to resize the full length of the brass case.
But in reality it actually only sizes the last 1/4" above the rim.
I assume it is set to a standard for diameter of the case for a 12 ga, 0.813" above the rim.
The outer diameter of brass and plastic cases should be the same, right !
So I should be able to resize paper or plastic using the same die.
The only other issue is decaping and repriming with the 209 primers, any ideas.

The roll crimper will need to be modified for RB and Hammer head type slugs.
Milled or bored out.

Maybe a paper hull with a paradox or stab crimp is better.
Can you get paper hulls still ?

Any load data for paper or plastic with a 1 1/4 oz hammerhead slug or 0.735" RB ?

Thanks
Nitro