Do you have some special knowledge that gives you a better understanding of the characteristics of H4895 than does Hodgden?I would be very careful you are heading into secondary explosion territory. Trail Boss is your friend.
I used a case load {Max load listed} of 4895 years ago behind a 110grain Sierra’s out of a 30-06 and they were explosive on contact with anything solid.Look up the reduced loads for H4895 in the Hodgon reference data section in their web site?