Lyman 410459B

[Bigbore5]

I just got this mold in some trading. Any body using this one? Opinions?
Also new to lyman molds, so what's the difference between no letter, A, and B molds in this particular mold?

[Sghinds]

I have a 4 cavity. Shoots well but my S&W 57 really likes the Lyman 41028. Would love to find a 4 cavity in it.

[Minerat]

I have a 2 cavity but no alpha number so can't help with it, but my older one, casts great and I use it with 7.0 gr of Unique makes a great kicking around load in my BH.