[ACE-OF-ACES]

Combat max for B-29 was a little over 36,000 ft bomb drop was from 32,000 ft. The aircraft could acheive this altitude even at max gross.
Combat range: 3,250 mi (2,820 nmi, 5,230 km) a little more than the distance from Tinian to Hiroshima.

At max gross?

As in max payload?

I find that hard to belive..

What reference/source are you refering to?

In that the rating of bombers, be it online or in some book, tend to talk about their max range/payload and max altitude all in the same breath or in some table..

Never stopping to point out that the two can not be obtained at the same time..