Just bought a 9mm Shield(bnib) and need to break it in. I,ve been shooting cast bullets in my handguns for years....45acp,38 spec etc. I have 125 gr RN bullets @ 20BHN and Unique powder available. I've check several manuals and am looking for a load that has enough poop to cycle the gun reliably but less than max velocity to avoid leading issues. I am considering starting at 4.5 grs Unique. I'm interested in hearing from folks shooting a similar load. Don't have a chrono so if you have chrono'ed similar loads or have ballistic software that could compute velocity of a 4.5gr Unique/125 gr 9mm load i'd like to hear about it. FWIW i realize there might be better suited powders i'm trying to get this done with what i have.....Mike