I'm in the process of trying to find the perfect conical and a mould for it, I see several old threads on the subject and a post by stoney The high road forums who has a Brook's true bore mould and another guy used a NEI mould. The NEI is a .732 dia and that's a 835 grain conical but a comment I read about them said they basically had to be hammered down the barrel I'm not looking for conicals that are that tight. The guy with the Brooks mould said his shot good to 100 yards and were 650 grains or so but did not give dia specifics. I e-mailed Brook's about it and they said they would need a simple drawing and some dimensions from me and mentioned something about a sizing punch. My barrel has 6 groves and from what Ive read the on the forums groves are .732 and lands are .724, I'm new when it comes to casting so when it comes to giving brooks the dimensions for a custom mould I'm lost and don't know anything about a sizer or a punch. I just don't want to spend over $200 and order the wrong thing. Any sizing suggestions would be great, Thanks for any help.