[Unclenick]

Well, that's just crazy, Carl. The Lyman #46 has data, though. 215 grain 410610 with 14.2 grains to start and 18.8 grains maximum. That bullet is in Linotype (hard) so you may want to stay near the lower end with a more typical commercial alloy, or work up slowly while watching for excessive leading and any kind of pressure sign.

I'm guessing they pulled the data from #49 because they discontinued the molds, but I haven't looked that up to verify it.

Another trick you can use is to take jacketed bullet data for the same shape and seating depth bullet, and knock it down 10% at both ends of the load range. That usually puts you in safe turf and is the strategy published by Ranier for their plated bullets, which they say should use lead bullet data.