Those in the photo are my 45, 50 & 52.
Here is my 54. You can see the solids in the rear as I made a HP to try to get the weight closer to 540gr.
View attachment 19035
Tom at accurate has copied each for others - solid, he doesn’t do HP.
All based off Gould.
45-380M
50-488M
52-545M
54-580M
I did not have Tom copy my 12b conical.lol
Although most don’t know their bore size, I asked Tom to make the top band larger to insure they engraved the rifling (at least 1 band).
If you know it, one can adjust any dimension(s) upon ordering.