The most common and most likely answer to this crossword clue is the 5 letter word FOUND
F
O
U
N
D
Buddy explains!

The straight part
We know that "Experienced/cast" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case experienced/cast = found.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FOUND mean?
FOUND verb- To encounter or discover by accident; to happen upon.
- To encounter or discover something being searched for; to locate.
- (ditransitive) To discover by study or experiment direct to an object or end.
- To gain, as the object of desire or effort.
- To attain to; to arrive at; to acquire.
- To point out.
- (ditransitive) To decide that, to discover that, to form the opinion that.
- To arrive at, as a conclusion; to determine as true; to establish.
- To supply; to furnish.
- To provide for
- To determine or judge.
- To discover game.
- Food and lodging; board.
- To start (an institution or organization).
- To begin building.
- To melt, especially of metal in an industrial setting.
- To form by melting a metal and pouring it into a mould; to cast.
- A thin, single-cut file for comb-makers.