I shoot my 6.5x55 quite often and like the following powders.

95-100gr bullets -IMR4064
120gr - Rel 19
129gr - Rel 22 or Winchester WXR [Grafs had some REALLY cheap and it is a different lot of Rel-22]

I would look to WXR of Rel-22 for any bullet heavier than 120, but I have never loaded anything over 129grs. The Hornady SP wokes so good, I don't see a need for anything heavier.

I don't drink or Smoke. I spend my money on gunpowder and gasoline.