Evening Buzzer
As you said John an 8x4x3 bale of barley straw weighs around 500 kgs, wheat straw tends to be slightly less. On a standard flat we get 44 bales on equating to 22 tonnes and on a step frame we can either get 49 or sometimes 52 depending on the make of baler giving a weight of 26 tonnes.
Cheers Wrighty.