When people say 4895 there could be 3 4895s kicking around, not all necessarily exactly the same.
H4895 - Hodgdon's version via ADI4895, the exactly the same powder.
IMR4895 - IMR's recipe. May be the same/close. I believe now discontinued. Maybe ADI decided not needed given their own ADI2206H/H4895.
4895 milsurp - probabaly rare to non existant now. Could be quite different to the modern versions.
Take care,
Bookmarks