And, here's an update,

When I received the rifle, there was accompanying loading data that was dangerously "over-loaded" and continued use these loads would have harmed the rifle. However, with some scientific pressure testing I was able to find the rifle's "sweet-spot" as can be seen by my target below. Many people unwittingly abuse these old Vintage Beauties needlessly thinking they must try to wring-out every last foot-per-second, rather than doing diligence to obtain factual period data and doing pressure testing to duplicate period loadings.

[Linked Image]

You never pay too much for something, you only buy it too early.