Hi guys. I am designing some drawing inserts to make 9mm jackets, about .58" to 0.6" ish tall, 0.352" diameter. I want these jackets to be around 0.011" to 0.015" thick on wall and bottom depending of what I can find around. Any copper alloy. I am also using a robust swaging press designed by me (will increase the handle length tho).

Before jumping in, I have some questions about it.

1 - What disk diameter should I start with? Is 25mm or 1" any good?
2 - Can I reach 0.352"ish diameter cup in one go with this press or should I add one step between?
3 - Stupid one: by my research, copper alloys gauge/thickness is standardized, right?

Of course if I add one in, there will be less effort, but I am taking time account the time.

Any input is appreciated!

Cheers
MFG

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