I keep my 4" Combat Masterpiece loaded with these 200 grainers- some of the last ones win-western co. made. These loads are hard to find and I have a shooter box and one for collecting. If yours has a really nice box then I would save them. If not try them out.
They chronograph at 625 fps from a 4" tube. I tested them for penetration in a pile of old clothes and they penetrated half the distance of a 185 gr 45 acp. I would imagine they would have been lousy against 1960s car bodies and auto glass, but so was all the other 38 loads of the time. Up close, against a man with no car to shoot through I guess they would be as good as any 38 LRN. They do seem to hit harder than 158 LRN.
On the flipside, Chic Gaylord, a 1960s handgunner/author of good reputation said they were the best 38 load made. Granted that is dated info from before hollowpoints, but for those of us who dont use hollowpoints all that much it is good to know.