I've found one on eBay : https://www.ebay.de/itm/Martys-Arms...e=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649
Has no sprue cutter and can't be used as it comes , since there are no vents to the cavitys cut , therefore don't fill with lead . But with a little triangular needlefile i could solve the problem .
Sprue has to be cut off with a pair of scissors , RB themselves come out pretty nice now .
You can roll them between two heavy metal plates or use a tool like I've made ( have a look at my thread " goodies I like to own ") to get them perfectly round .
Only thing is , I've ordered and payed on March 7 , sent out on March 19 (sic!) and finally got it today , May , 7 ! So You should be VERY patient .