I have done it.

Killed the first five first barrel and thought; 'This is pretty easy'.

By the end of the afternoon I knew better.

You need tight chokes to kill going away birds and stop them dead before they cross the fence. Open chokes kill but not inside the fence. 1/2 and 3/4 or 3/4 and Full seem to be best. Too tight and you risk missing birds which cross or fly at you, closing range as they do.

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