Hello DOH
I have a Ruger #1 in .405 and just got a sizing die for my boolits Friday... For the 400 gr. Data (mine is a 420gr mold) I will be using Hodgdon 2008 Annual Reloading Manual..
They list loads for:
Varget----48 to 52 grs
H4895----45.5 to 50.5grs
H4198----33 to 36.5 grs
And thanks to Boomer I'll check out K.Waters Pet Loads also...
DOH... you might want to go to the castboolit website and do a search there...Not a lot of data on 400 grainer's there but I found data for the RCBS 350/.417 boolit which is suppose to be one of the more accurate boolits in the .405 according to one of the posters there that has a lot of cast boolit shooting experiance...I just got one of these RCBS Molds the week before last..They size down easily to the .414" that I'll try after the 420gr boolit..
See post #9 and #58 in link below
http://castboolits.gunloads.com/showthread.php?t=10445
What rifle is your .405 chambered in?