It's been several months since I had one of my Sniders out to the range. I had run .576 Lee Minies through it (with poor results - mainly just wanted to fire form the cases) along with .600 round balls in cheddite hulls (much better accuracy).
I made up brass cases out of Magtech 24 gauge cases, and after they were fired I noticed the case mouths were a little out of round. Obviously the Lee .577 Snider sizing die works the brass way to much to get the case mouths back to where I need them to be. I'm considering having a sizer made to reduce the case mouths to .604" and go with a .605" boolit. I have looked at different mold designs and I'm leaning towards the collar button boolit. I see Accurate has a 60-480B that looks like a good candidate.
I may just try to do a chamber cast on this particular Snider just to see where it's at and then do one on my Nepal Snider to see if I can get by with one mold. Of course I haven't even fired the old Nepal Snider yet. If the bore is smaller maybe the Lee Minies will work. Well that's a job for another day...
I have order quite a few Accurate molds over the years and the quality is always top notch (but you all knew that-). Just wondering if anybody has used this mold, and what their experience was. If it's there somebody must have bought one...