I do reload , my hunting load for the .357 is Horn HP/XTPs ( 158 gr) at 1200 fps.....thats near what you quoted the factory Hornady ammo at. Personally , I really like the XTP bullet. It has penatration and expansion......IMO the perfect handgun bullet for whitetail. I used the 180 gr a few times (on paper), never really got good results with it. I think the 158 gr will fly a little flatter with better velocity, allowing the XTP to work its magic. I'm sure the180 gr will work , I just think a 158 gr is better suited for your quarry. You asked about Buff Bore , only used their product in 45 Colt......it was HOT. I was using it in a Ruger SRH 454.....so it didn't concern me too much...I've heard others say the same , unless your hunting wolly Mammoths....don't think ya need that type of a load, assuming they load the .357 the same way. Only my opinions........good shooting
regards irold