Remind me not to rely on either of you two for any mathematics beyond counting on my fingers...
If you only get £10 worth of meat per carcass you are not doing very well at all...let alone that if non-lead ammunition costs £300, you do not get an
extra £300 simply by not using it...unless you truly do kill your deer by shouting at them.
Interestingly, according to Dauntsey guns, the small difference in cost between Federal's factory Nosler BTs and their factory Barnes TTSX is £5 per box and it is the lead-core bullets which are the more expensive!
The cost of the bullet relative to the cost of or return from a stalk is really insignificant I think...but each to their own!
Alan