Dave, as I surf for 41 caliber stuff, the 400, 401, and 403 moulds taunt me, they really do. I saw a 403 that looked pretty nice, don't remember the last three digits. No, you can't have any .410/.412 moulds.
If there is a better description of the genesis or use of these bullets, I'd like to know...
http://ps-2.kev009.com/ohlandl/Cast...an_Mold_Descriptions.html#400_caliber_400_dia
40188 A very successful bullet designed by Douglas Sorenson for the .38-40 (PB, 170 - TP is 88)
401452 Designed by Boser for the .38-40. (PB, 196 - TP is 452)
40395. These are good light weight, grooved, short range, .40 caliber bullets. They require special chamber to seat them. Another good .40 caliber short range bullet is No. 40043. (PB, 145, 195 - TP is 95)