You are probably talking about Coronado Bologna. I grew up eating it too, but my mom bought the ring bologna that was much smaller in diameter and you had to slice it yourself. She'd cut it into thick slices and fry it until it was crisp. It was great in sandwiches or when we were particularly broke it was our meat for supper, usually put into fried potatoes to eat in a homemade flour tortilla. Heaven!
that sounds like it! we have to slice it ourselves.. and i happen to like the smaller diameter... yum!