Many thanks for all your kind comments and advice, especially Daryl's time to post so many loads

I have some cases on order and will probably start with the BP load as it was what the rifle was designed for

I have some H4198 so that will probably be the first smokeless load but Marrakal's sounds interesting but I now have much information to go with

Huvius - I had already printed your link for my Field's Patent, very useful
I am sure I will agree with your comments after I start shooting

Thank you again everyone

Tony