I have had the 55 gr. Sierra HPBT's not open at close range 50 yards and under but I've also had them explode at the same ranges . I think it was in the shot placement hitting bone or just hitting soft tissues . In the dark of night over a bait pile I would most often be using my 12 ga. with #4 buck . If all my coyote shooting were under these conditions I would most likely run a red dot or a thermal with little to no magnification . If I were on a budget and raising my family again I would use what ever I had on hand and do my best to get good shot placement at these close range shots I would try for the front shoulder midway up on broad side ,quartering shots . On facing head on I would try for center of the chest side to side and up down . On back end shots I think I would wait for it to turn so that I could put the bullet in at an angle going into the lung heart area . But then that's me .