A critical factor in the calculation is the weight-of-animal to weight-of-meat percentage. Doganjo suggested, if I read correctly, that it would be 85% and Barcud suggested taking a further 25% off this. That would mean that a 400k animal would yield 240k of meat.
I'm doing the same exercise for two heifers and am calculating on a 50% reduction in weight from live weight to meat. My figures are based on talking to farmers and are very rough but it might be wise to calculate on a worst-case basis.
If it is of interest, here are my figures, which I'm sorry are in euros and kilos, but the percentages should be of interest.
My own figures per animal are: cost of charolais heifer €400, feed supplement and licks €45, slaughter (including butchering, bagging, labeling and blast freezing) €220. Total cost €665. There are favours to be repaid in meat for borrowing a trailer etc.
With a live weight of 500k of which 50% is meat that leaves 250k of meat at €665 or an average of €2.66 per kilo for the meat.
Looking in the supermarket I see that organic mince is nearly €8 a kilo and T-bone, fillet and the choicer joints go up to €25 a kilo.
Hope this is helpful.
PS Anyone know how to convert kilos into litres or c.c (which is the measurements the freezer companies use in this neck of the world).