I contacted Pedersoli about ammunition for the Sharps 45/70.
This was their reply.
The .45-70 caliber is rated to use factory made smokless ammunition not exceeding 31908 P.S.I., or 2200 bar, as ruled by the C.I.P all the European Proof Houses refer to.
I also contacted Winchester about their ammunition, they told me their ammunition pressures were proprietary and would not tell me. (They lost a customer for life)
Since I have already purchased 2 boxes of ammunition. I want to know if they would be safe to use.