I could see where youd be leary about using a gun that youd have to worry about richoshets but only if I hunted in a city where houses are everywhere. Cmon ? seriously coyote hunting? to me the 243 and 270 would be same here.
Everywhere ain't Texas. I live in rural farm country and from where I sit there are 12 houses within one mile of me and another 1/2 doz if you add another 1/4 mile. Just imagine how many are within 3 miles? And yes, there's a big difference in bullet construction and thus in ricochet factor between a .243 and those available for the .270.