Re: Need load data for Berry’s 9mm 147
I went through the same thing with .45 acp 230gr Berry's and spoke with a Bud Watson at Berry's Mfg. He said: "Lead data does not to be followed with our copper plated bullets - they are good up to 1200 fps as long as they don't get any heavy roll crimps." Obviously you don't want to disturb the thin copper plating. I just used recipe for a comparable FMJ bullet.
Hope this helps.