wildcat loads

[harfman99]

hey guys I am in need of a little help on starting loads for my 7mm wildcat (7mm-423 Dakota improved. case that has 100 grn of water capacity to the neck. The bullet is 7mm 180 berger hybrids bn coated. I am looking to use retumbo H870 or H1000. If anyone can help a guy out it would be greatly appreciated.

Thanks
Chris

 

[harfman99]

h870 is the powder I would like to use only because I have several kegs of it.