When looking at a 6,5 x 55, I started a list with various loads from CGN'ers. There was not one for 7828. Nothing in Sierra. Hornady lists 39.6 - 43.3 with their 160 grain RN.
I shoot a M98-based target rifle in 6.5X55. I found IMR7828SSC to produce a very accurate load with the 140 gr AMAX at the highest MV I have observed in that gun. I used a full case (51.0 grs) at an OAL of 3.200". I have to say that 46.0 grs of H4350 edges it out for accuracy, but was almost 200 fps slower. The difference was slight, but accuracy beats speed.