I shoot single shot rifles, been a member of ASSRA for years. Most of us look at old manuals when working up loads for obsolete cartridges and substitute powders no longer available .
We do it with extreme caution and have found many glaring errors in well known manuals. Lyman in particular. It's what we have to do in many cases to get a nice old rifle shooting. Rifles you can start very low and work up, and pressure signs show easier than with shotguns .
Modern shotgun plenty of tested loads available using modern components, old data is not worth the risk.
Boats
