Thank you my pagan friend..
No plans to market anything? I listed all parts used and where to get them if anyone else wants to use brass in their .410g bores. The brass can be fire formed from 9.3x74R and .444 Marlin, no dies are really needed.
The rim thickness is not an issue on the brass but some .410 chambers have a radius on the front side of the rim rather than square so the brass need to a radius to lock the action properly. This can be done in a lathe, drill press or even a cordless drill with a file and some fine sand paper.
It doesnt need much, just basically enough to take the sharp top edge off.. pic is of an un-modded 9.3x74R case on the left, the middle one has had a radius filed and factory hull on right. The important part is that the action locks up fully.
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