I have a Ruger 357 Blackhawk 4 5/8. I’ve been loading for years Lyman 358156 GC SWC 160 grs behind 6.0 grs Unique seated long in 38 Spl brass cases. This has proven to be a very accurate load in my 357 Magnums, more or less between a 38 Spl+P and 357 Mag loading. I have a bunch of Lyman 358429 170 grs - I’ve seen loading data using the same 6.0 grs in older Lyman manuals. I’m considering using 6.0 grs Unique for the 170 gr 358429 as well in new 38 Spl brass cases, marking primers accordingly in red, in my Ruger 357 Blackhawk for an all purpose working load out here in the high desert. Anyone use 6.0 grs Unique with the 358429 in 38 Spl cases out of either your 38-44s or 357 Magnums? I would suspect muzzle velocity approximately 1,000 FPS out of my 4 5/8 inch Ruger but chronograph will tell. Pressure I would suspect to be approx 22k-25k psi
Please note these loads are for my Ruger 357 Mag, I’m not in anyway suggesting use of them in anyone else’s firearm (s).