40 does work on 10mm?

[Psychbiker]

[Karch]

They work, just did this myself.


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[Yetiultimate]

Yes, you can use the same dies, just adjust them outward as needed for the longer case. I’m lazy, so I bought 2 sets of Lee cheap. Same die set, same part number

[ar15barrels]

You can buy a spacer that is made to the difference between 40s&w and 10mm so that you just remove the die and install the spacer to raise the die without adjusting the die lock rings.

[newbie1234]

This ^^^^^^^
As same as 38 SPL and 357Mag can use the same die set. I have one set for each caliber. One set can last you a lifetime. The cost of ammo you shoot in two range trips is more than the cost of another set.

[Karch]

You can buy a spacer that is made to the difference between 40s&w and 10mm so that you just remove the die and install the spacer to raise the die without adjusting the die lock rings.

Are these commercially available?

Thank you.


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[ar15barrels]

Are these commercially available?

You need a 0.142" spacer to adapt your 0.850" adjusted 40 dies to seat and crimp 0.992" 10mm cases.

This has some sources of die shims:

https://www.uniquetek.com/store/696296/uploaded/Die_Shims_and_Die_Spacers.pdf

I must have made my own because I don't see a 40/10 spacer from rcbs or redding though both have them for 38/357 and 44spec/44mag.

[Karch]

Thank you.


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[baranski]

Welcome aboard, such a fun and variable round.

[ar15robert]

my rcbs are labled 10mm/40 sw