On the Hodgdon website for the 6.5-06 with 129 grain bullet they list a charge of 42.0 grains of IMR 4831 as giving 51,000 psi and 47.0 grains as giving 62,700 psi. I'm using 54.0 grains with no sign of excess pressure. Something is wrong with their data. I contacted them and they assured me that the pressures were correct altho they did not verify that the charge weights were correct. Frankly these data are not consistent with either .270 Win or .25-06 loads using similar weight bullets. I'm at 54.0 grains of IMR 4831 with a 117 grain bullet in a .25-06. Just goes to show that you should take all of that data with a grain of salt.