I have molds in 30, 32 and 45 for rifle bullets, no grease grooves. I have fair to good luck with these NGG bullets at low velocities, lubed with liquid alox or Darr lube. I've sent samples and loaned molds to folks who have had pretty good results.
I had these made to increase the BC, and it worked with the 45, the only one I tested. This ~435 grain bullet tested in the ~.6 BC range.
However, it leads fiercely with a full charge of BP, and I moved where there is no range nearby over 100 yards, so I lost interest.
I have pictures but don't know how to put them here.
Tim, if you want some or to use a mold, let me know.
joe brennan
joeb33050@yahoo.com