Accurate cast loads for the Herrett?

[thomas]

Anyone shooting a Herrett 357 with cast bullets?
What powder has worked for you best?
How bout Unique?
What weight or type of bullet?

Lots of questions
Thanks
Tom

[IronMonkey]

Make sure on your herret that the throat isn't bigger than you think.  I had a 30 herret that had a .310 throat so I would have used .311 cast to prevent leading or swaged .310 bullets in the process of firing.  TC has a problem with the 30 herret throat but I am not sure if that applies to the 357 herret.   Dan

[thomas]

Would one find out the size of his barrels throat?
tom

[Cat Whisperer]

There are several ways.

One that gives you the most information is to make a chamber cast.  There are some metals (alloys) that melt at very low temperatures (180dF).  Brownell's markets one called cerosafe.

You plug the barrel just in front of the throat.  Melt and pour in the alloy.  It will harden, you punch it out with a ramrod after a specific time of cooling and measure it at the various diameters of interest at another specific time after removal.