After the Browning came the Walter, 7.62? Fewer rounds than the Browning. Plenty of practise, annual shoot with very few rounds. Group and then snap, jammed rounds drill and magazine change.
What was never discussed was tactical use and ROE. We always fired two handed from standing position at the charging enemy just 15 metres away. If in the middle of nowhere faced by one man I might have been tempted. Two men - not a chance.
If an unarmed person discovered you, could you shoot him? If you did and were then caught I don't think you would get a fair trial. If he was armed I don't think his mates would have been that happy either.