Just got back from the range testing more of the 273 gr cast HP/GC poly coated bullets and the Hornady 245 gr SP. I tested the cast 273 grain with 11.6, 11.8, 12.0 and 12.2 grains of Unique. Bullets seated to 2.150" in Hornady twice fired brass. Win SR primer. Testing was at 75 yards for this bullet. All charges produced groups under 2". Best two were 11.8 grains (1.135"), 1266 fps and 12.0 (1.661"), 1261 fps. ES in the teens and SD was single digits.
The Hornady 245 grain SP was loaded over IMR 4227. Two loads that shot under two inches at 100 yards was 34.7 grains and 35.2 grains 34.7 yielded 1844 fps and put three into .590". The ES-91, and SD-49, was high so the group is probably a fluke. 35.2 grains (1856 fps) put three into 1.158", ES-69, SD-35. Primers are showing a little bit of flattening like a normal load would. Max charge with the IMR 4227 is 36.6 grains. I'm really pleased with the cast bullet loads. Now to work on my 316 grain Cast gas checked SWCs with poly coating.