My guess would be that if you run your .17 Fireball through your .17 Mac iv dies it would work. I have a .17 Rem. and a .17 -223 and nether round will chamber in the other, but eather could be fired in the other chamber if run through the others dies. When froming the .17 Rem. from the .17-223 the cases will be very short though.
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Catfish
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