WTB Powder Coated Hollow Base Wadcutter Bullets

I am not sure if this is the correct forum area, Mods please move as appropriate.
I am in need of some hollow base wadcutter bullets which have been powder coated, .357- .358 diameter, 148 grain. I would like to purchase 250-300. The inside of the hollow base need not be powder coated.
If anyone has these or can make them up for me, please PM me with availability and price. These are for an experiment I am running with a S&W Model 52 and a Colt Mark III. Thank you.
GJH- tchepone