Unmarked Mold

[milcol]

I have an unmarked mold that came with a rifle I acquired, the only marking is S and a B Cast a few bullets and they measured .459 bottom band .457 grease bands OAL 1.435 weight 535 grain looks a lot like a postell bullet,the rifle is a Parker Hale .451 I am guessing who ever had it sized the bullets, mold has no other markings perhaps a custom mold any input.
Thanks

[Pressman]

Please post a picture of this mould, someone will be able to ID it for you.

[1Hawkeye]

I'm thinking Steve Brooks but thats a mold for cartridges not a muzzle loader. A photo would help.

[milcol]

Tried to post photos but to no avail, did a little further research and am positive it is a Brooks mold looked at his web site and it looks just like his molds has three alignment pins sprue plate and screw are exact, will try the bullet in my Shiloh 45/70, thanks for the replies.