RB in .44cal ARE around 140gr or so. The conicals ARE about 200gr, so all is well. BUT, loading conicals, unless you have a relieved chamber mouth, is a RPITA, and unless you are after hogs at 10 yards with stocious loads that would rattle your brass-framed pistol to components in short order, my advice to you is to melt them down and make more ball.
Thanks for the info. I poked around with this stuff again today, I think there is a mixture of equipment in the box it came in. Estate materials can come in all configurations, often put together by people who don't know any better. I measured the RN flat base bullets, they won't do. They measure .450 to .451, definitely will be melted down. For me not good enough even for .45 ACP. The round balls measure .454-.455 which I guess is good for the BP revolvers.
The powder measure I believe is for rifle, large increments and big hole. The flask may also be for rifle, large dispensing hole too big for revolver. I had a revolver flask years ago, it was the design with a lever and small narrow spout. There's also a brass rammer tip definitely for rifle, also a couple of brass spouts that have no utility for me. Today I ordered a smaller measure more appropriate for revolver.