Need help finding heavy plain base 50 0.510 mold

[ohnomrbillk]

I'm looking for a mold for my 510 Whisper.

I have no desire to use a gas check through a suppressor.

Rockrat's big 850gr would be perfect if it were plain base

CBE has a 975 GC that they will cut short of the gas check shank, but the two I've measured Bullets from cast small at 0.509"

Any other suggestions?

a big BPCR Postell style might be ok, but I've never seen one over 600 grains.

Input appreciated

[WARD O]

Accurate Moulds. Call him up and tell him what you are looking for and he will likely build it exactly.

http://www.accuratemolds.com/index.php

[masscaster]

+1 for Accurate Moulds........

[Jolyon39]

Hi, I am keen to hear what you find out.

I am about to build this rifle, I have the donor action and the chamber reamer but want to know about the bullet before I select the barrel. I am told that Lead bullets prefer a different twist rate.

I am also keen to know what base you select, perfectly flat, tapered, less than .510 or exactly .510...... Etc

FMJ projectiles in .510 are about $7 each here in New Zealand but I have about 200Lbs of lead lying around so getting into casting is a no brainer.

[GWM]

Couldn't you use a gas check design just without using the check?
Otherwise Accurate Molds will make a very good mold very fast.

[dubber123]

Mill the GC off Rockrats design? You would probably end up at 830 grains. Or you could have the GC reamed out and gain a few grains of weight.

[Tnfalconer]

I want to see what happens here as well. I am not looking for a subsonic .510 but rather something that has proven accuracy at distances past 800 yards.