dungfennel,
And another one rises to the bait.
5-6 miles error per hour was par for the early bomb nav systems. Correcting the system by astro navigation, over the sea, produced 'good' accuracy of about 5 miles. In competition stuff it was possible to get 400 yards or thereabouts as Bob Tompkin's did once in a Vulcan on the SAC Bomb Competition.
This was strictly selef-contained steam age navigation.
If you were dropping a pait of 25mt's then it was good enough for government work, especially if nos 2/3 were criss-crossing.
Dropping 108k of steel needed a bit better accuracy but a 3 ship could still manage a fair bit of jungle clearance with danger from falling branches. That's tongue in ceek too.