Thanks gatsby!!

the rifle is this one here..
http://www.champlinarms.com/Default.aspx...3&GunID=837

The bores are .775cal...don`t know the groove?

I have thought of having a toolmaker to make up me a crimping-plier....
Where can I get a shellholder for the 10 gauge brass??
Is it nessesary to full-length size the brass after firing?
What would be best to order brass using shotgunprimers or rifleprimers??...

oh..The multible ballloads were for anthills/junglework and such...no serious thing really.hahaha ...just "funloads"

Thanks again gatsby...