It would seem to me that anything at or below the 8,000 psi black powder levels would be fine. As long if the gun was in good shooting condition, and having the action bedded in case of wood shrinkage due to age. In guns that have not been bedded, dropping around 20% of psi, or to around 6400-6500psi seems prudent in order to take it easy on the old girl's wood. The exception would be a very light English gun, perhaps even lower...

Last edited by Ken61; 05/10/14 02:38 PM.
I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.