I always shoot the farthest one first as it will be the least aggressive and the second one which is the closest you can often stop them or they are so close you can pick them on the run any way. Before I start pulling the trigger I have it worked out in my head, boom cycle bolt while moving to second one, if he looks like he's stopping I let him if not I swing through and pull the trigger just as the cross hair passes his chest, cycle bolt, get the giggles under control
I almost all ways hunt with a partner so as soon as the farthest one drops the second one does also. We called in 5 a few weeks ago and we got so excited we let all but the first one get away
I've had the second one stop and check out the first one and piled both of them on top of each other. I also like to have the caller or remote operator take the first one then go to a coyote in distress to slow the second dog down for a shot. Then again some times they just hook and book.