Managed to get large bag of loot (7)
I believe the answer is:
ransack
'loot' is the definition.
(I know that loot can be written as ransack)
'managed to get large bag' is the wordplay.
'managed to get' becomes 'ran' (I've seen this in other clues).
'large bag' becomes 'sack' (I've seen this before).
'ran'+'sack'='RANSACK'
'of' acts as a link.
(Other definitions for ransack that I've seen before include "Search (a place) thoroughly" , "Search, leaving no stone unturned" , "Search thoroughly and destructively" , "Plunder; search ruthlessly" , "Plunder - rummage" .)