Any one have a source for 52gr Match ammo? My RPR loves it, especially Black Hills but no one has any lighter weight .223 match ammo in stock. I can find 69, 75, 77 gr all day long even at affordable prices now but nobody appears to be loading the lighter pills.

Consider reloading.
Get yourself some Bulk Hornady 52 gr OTM
Get some H322 if possible an old time BR powder that made the 222 Rem sing as it does in the 223, 2 other excellent alternatives Varget - N133

Another sources for BH ammo especially seconds is First Stop Guns Rapid City SD