I resized Hornady 200 gr .358 bullets and cut them to length to in the lathe collet to fit 9mm COAL. A 185 gr 9mm used to be available from the factory in the Shell Shok line of bimetal cases.Their hybrid cases of aluminum and SS head. Cases available for handloading, in 9mm and 300 blkout were ooffered.
I'm running 155 gr FMJ at 1200 fps in the AR, 2640 fps 50 gr copper, in a 16" and 1720 fps for 115gr shooting steel at 200 yds, in the shorter barrel that is no longer, with all the AR pistol and braces controversy.
But 165 gr copper plated are available, and 2000 fps available in factory 50gr copper pistol loads.
So I have lately went to the AR for 9mm and 380 pistol for plinking fun. All jacketed bullets.