For the brass... Couldn't I buy the Bell 450 NE brass that Huntingtons has and resize it for the 450-400 3.25"?

Spoke with JJ today about the Lang. He said the bores are nice with no cordite burn or throat erosion and the internals look good as well.

He also told me the gun slugged .408 (he said it varied between .407 and .409). Is this variance normal? Is there anything special I need to know to accomodate this variance?

Which bullets would you guys suggest I use in this rifle? I assume it will be Woodleigh but thought I should ask anyway.