The venison ones you cant really work out as we cant have anu idea what fat content theyve got. These are a few venison burgers from syns online:
Tesco, Venison Burgers, twin pack, chilled,
114g each
1
Sainsbury's, Taste the Difference Venison Burgers, twin pack, chilled,
150g each
3½
Asda, Extra Special Venison Burgers, twin pack, chilled,
114g each
2½
Marks & Spencer, The Grill Venison & Sweet Red Onion Burgers, twin pack, chilled,
142g each
1
All I can suggest is work out an average from those and then weigh yours and calculate the equivalent.
Bread is just 1 syn per 20 calories, so weigh the extra bit you use and then work it out from the calories on the bread packet info.