I can't add much but mine were heritage bronze, got them 19th July at 10 weeks. I enjoyed having them around watching and listening to them (some of the time) the Local game keeper dispatched for me, we plucked immediately and hung for 5days, dressing is easy.
They was great to eat. I was happy with the weights they achieved.
Be aware stags are a lot bigger than hens if your rearing to sell.
They cost nothing to keep and could be easy money!
Down sides for me, I could have done without dressing turkeys the night of the 23rd when I had family staying for Christmas

Will i do it again next year? id like to say I'd never eat another supermarket turkey but boy they was a pain in the neck!!! They get everywhere! A roof they are on it! Foot path, road, the neighbours, no respect for electric netting as they walk rite over it to get in with the chickens, and they enjoy nothing more than pecking at your patio doors. They also get up last and go to bed first or they are up in the trees which is 2 extra trips out in the rain.