Not personally but my boss at Wittering, Billie Wells did.
He says at one time the ball bearings were emptied and rather than landing in a bucket ran all over the dispersal.
Of course to get them out the hole was at the bottom and of course you could not stuff them back. I believe the bomb had to be rotated to get them back in. Said quickly that sounds OK.
But that means offloading the live bomb.
Then it was not a simple issue of dropping them back in as the impact could . . .
Then of course it was necessary to ensure they were properly packed. To that end a secret tool, a 76z item, a Tools, Puddling was used to gently tamp them down.
Woe betide anyone that lost one of these tools though you could get one from Barrack Stores provided you didn't say what it was for.
In Barrack Stores it was a C class item aka Handles, Broom.
I think a friend of mine might know some more.