I'll say one more word of caution.

Don't take any of these figures at face value. You MUST begin with reduced loads and work up, using a chronograph to verify your results. To do otherwise is to invite disaster.

I would not trust the load quoted from the former owner. You don't know his loading practices and safety standards. Don't trust my loads in another rifle, either.

If ever there is a time when loading safety must be observed it is when you are developing loads for a 120 year old antique. The rifle deserves this respect, as do your face and fingers!

Good luck,
Curl