Can't find a source for brass, can get 3" but no 3 1/4. Can .470 be fire formed in my Holland DR? Heard Bertram brass is not very good. How good is Rocky Mountain turned brass? My rifle is a black powder express. Thanks.

Maybe this will help...

http://www.riflemagazine.com/m...PDF/hl267partial.pdf

http://www.buffaloarms.com/browse.cfm/4,677.html

http://www.grafs.com/retail/ca...egory/categoryId/901

Thanks wrongtarget, great info! I ended up calling Graf and ordering .470 cases that I can fire form. Love the article on the .500 3 1/4 Holland. My double rifle was made for a Major Gould in 1885 and is cased with all accessories in excellent condition. It is a top lever hammer rifle with a dolls head and third fastener