Help with US headstamps for European Sporting

Here is a picture of a reloaded case with a non-factory nickeled primer cup. Cases with this headstamp use a large rifle primer.

R-P2

Thanks Fede

The following is supposed to exist: “REM-UMC 7.62mm” (7.62x39) as listed by Tillinghast.

Can anyone confirm this with a hs image ?

Thanks

Does he mean this:


Before there was a reason to differentiate between 7.62x54R, 7.62x39, 7.62NATO.

hello
these “bottoms” are from 7.62x54R mosin be they remind me the 8x50R lebel