It should be fine as long as you have 12.1(5)T or later
i only have vxr chassis with npe 300 or 400 or npe g1 processors, the only recomeded ios ref is for 12.2 xy or similar that is no longer available,
i would ideally like to run these in the 7301, cco says they are supported....
CCO can be wrong on occasions. These cards had a limited production and some info can be wrong about it. Test it first in a 7200 chassis to verify it's working.