whats the heaviest .309 mold readilly available?

[rufracer]

Im looking for something really heavy for my 300 whisper w/ 1in8 twist. It should be able to stabilize up to 1.75" at subsonic speeds. The heaviest Ive found is 220 grain. it can be .309-.312 or so. Money is an object, so be gentle.

[Junior1942]

With that 1 - 8 twist, you'll hit 110,000 rpms at ~ only 1225 fps.

[docone31]

I size the Lee C312-185R to .309. It fits the bore really well and is inexpensive.

[rufracer]

Its for less than 1050fps.

[carpetman]

I'd think a 6 cavity steel mold in most brands would be pretty heavy.

[rufracer]

I guess the really hard question would be, what kind of ballistic coeficient would that 6-cav have.

[carpetman]

rufracer I think ballistic coefficient is based on velocity so it would depend on how you launched it.

[jonk]

http://www.theammodump.com/cbe.php

He has a 225 gr gc just for the whisper.

[JeffinNZ]

Jim at CBe in AU does a .30cal at 240gr for the Whisper.

[jhalcott]

How do you READ that list?? It confuses me! I could not find any caliber listing

[AzShooter]

Everything is listed by bullet size, ie 311-190 PB = a 311 size bullet weight 190 grains and Plain base.

[Johnch]

IMO his images of the bullets need some work

But they are some fine moulds

John

[rufracer]

carpetman,

Im thinking electro magnetic rail gun if we are going with steel.

[rufracer]

Hey, thanks everyone, Ill look into it and let you know how it goes.

[JeffinNZ]

Bottom right hand corner.

http://www.castbulletengineering.bigpondhosting.com/photos/album_004.htm?picture=../photos/e2c3b22d589af69795682ebd5ce66421.jpg

[Bad Karma]

Mountain Mold is a good place to start. You can design your own and they'll cut it for you.

http://www.mountainmolds.com/

[rufracer]

JeffinNZ,

Will that thing cycle in an ar?

[JeffinNZ]

Couldn't say. I have no experience with AR's. Should be a factor of seating depth though. You could ask Jim what his customers are shooting it in.