DR,
I've found loads in manuals for the Whelen that are giving data with top or near top velocities with A2015, hopefully with accuracy as well.
84Mtn,
If Whelen loads don't work out, I've got .223 and 45-70 in mind as backup alternatives. I might even consider the 45-70 option to be better. My load for it with 405 gr. Remingtons uses H335 which is accurate as hell but the fireball at low light resembles the muzzle blast of the USS Missouri's big guns.
