Gentlemen; Thanks to all of you with the data and suggestions.

The 1st test firing went better than I might have hoped. I loaded 8 cases, 4 with 5 drams and 4 with 6 drams. I used 10 ga. nitro cards to fill the case just so I could get the "ball" so a slight roll crimp would hold it in place.
A large paper target was put in place at 25 yards, the 1st 2 shots went into a 1.5" group which I felt was positive for the first test.
Three others wanted to then try it and I/we wound up with a 4" group, if you can call that a group with 4 different shooter's and 2 different loads.
I need to find my cerosafe and get a casting of the barrel and get a better fitting ball. Along with the measurements from the fired cases and compair those with the un-fired cases.
As expected, the recoil is more of a push than a slap but no doubt that the weight of the gun is appreciated!
Thanks again for all of you veiws, thoughts and ideas and the above loading data does confirm for me anyway, about where I can go in the future.