Dennis,
Actually yes proofing before the build is what I am asking. Testing it maybe not to proof standards whatever that may be but to a full hunting load for that caliber.
For example I had a percussion rifle built for me, a .58, that when I got it I worked up a load that is pretty accurate using 80 grains of 2F with a .570 Speer round ball at 50 yards. If I were to hunt with this rifle I would probably start with at least 100 or 120 grains of 2F. I have seen as much as 140 grains mentioned on some various posts. The rifle I had made was never shot before I shot it and sighted it in. Finishing the current rifle I am building got me thinking about loads for it and just how strong the barrel is. I know the barrels made today are better made than some of the antiques I have shot before. But putting all the time I have in this rifle got me thinking about this.
Rich, that is the thoughts I have had too.
Thanks,
Rob