Quote:
Originally Posted by rhuff
Was it originally a 3 die set, or has someone added a die, and forgot to tell you?? With your experience in things like making modified/reformed brass and reloading, I can't imagine what kind of a die has you stumped!! You have definitely peaked my attention.
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Right.
OK, here goes:
RCBS die set as shown in post #5 above. First pic below shows all three dies in the set I received, disassembled. They are marked as follows, in order as shown -
[first die]
RCBS 8mm Nambu Size # 170 on die body
[second die]
RCBS 8mm N on ram; no die marking
[third die]
RCBS 8mm Nambu Seat #370 on die body
Second pic below shows just the middle die, with dimensions as shown.
Here's the problem...The ram in the middle [expander?] die expands the cases so that a .321" bullet falls right in. Very good fit; I can feel the air rushing out the primer hole. The ram also has a taper leading to another expanding size which is a sliding fit in a 38 Special/357 Magnum case but does nothing to an 8mm Nambu case unless you push it down to the beginning of the taper, when it will give the case mouth a very slight bell...But if you expand the entire neck, there is nothing to hold a .321" bullet in place to crimp it...It falls inside...
Pretty much every book I have [including COTW] shows the Nambu bullet as .320", which is even worse...
I first thought the middle die was the accessory die for expanding the 38 Special case, but the entire ram slides right through & bottoms out...Without touching the 38 Spl case...So it's not the expander for making 8mm out of 38 Special...
I can just push the middle die ram down a slight bit in my formed cases, but then I get no bell...
So...WTF is this die for???