I really like this post (especially page 23 Labram fuze and 4.1in) :
https://www.angloboerwar.com/forum/...ipment/31231-artillery-and-ammunition?start=0
https://www.angloboerwar.com/forum/...ipment/31231-artillery-and-ammunition?start=6
https://www.angloboerwar.com/forum/...pment/31231-artillery-and-ammunition?start=18
https://www.angloboerwar.com/forum/...ment/31231-artillery-and-ammunition?start=132
https://www.angloboerwar.com/forum/...ipment/31231-artillery-and-ammunition?start=0
https://www.angloboerwar.com/forum/...ipment/31231-artillery-and-ammunition?start=6
https://www.angloboerwar.com/forum/...pment/31231-artillery-and-ammunition?start=18
https://www.angloboerwar.com/forum/...ment/31231-artillery-and-ammunition?start=132