What's the point of leaving it sit for 6 hours (insert question mark here as I can`t, my keyboard is fubar...)
That's the time between "getting up early to go shooting" and lunchtime. Authenticity is everything.
I imagine the sandwich would only taste exactly right if you had a bit of gun oil and powder residue on your hands, some kind of spaniel drooling over the possibility of sharing your sandwich, and a few freshly killed birds stuffed in various jacket pockets.
I'll let you know in a couple of months, assuming that a pudelpointer is an acceptable substitute for a spaniel.