Please see
https://www.youtube.com/watch?v=b1dFzFwgrfE which is a superb discussion with Tod and Tobias at the Wallace Collection in London. Actually there are two videos the second is a brilliant talk on some of the best Armour at the Wallace....
The first video considers myths and facts focussed on Agincourt the battle. Towards the end of the Agincourt session mention is given to the use of beeswax being used on arrows. Later in a separate video this method of improving penetration is tested out by Tod on one of his workshops...
Peter Hudson.