Dear Veral: There was available a cylinder type mould, at one time. I believe one version was called the Ideal mould. It didn't make lube groves, but I guess, was used for paper patch rifle bullets. Also some versions were adjustable for length of bullet. Seemed like such a good idea, at least to read about in old catalogs. Mention is made in one of Paul Matthews books about one he had.
Why isn't this design available now? Other than not making lube groves, is there some disadvantage or problem with this type of mould, compared to a two piece mold? Or is it just a case of very limited market?
I'm not trying to reinvent anything, lots of ideas and methods have dropped from use with the passage of time. Why this one?
Thank you, Woodbutcher