Which is the most effective. The only coyotes I have shot with the 22lr were with solid 40grn. One droped instantly at 150yards and one took 5 shots at 30yards, both were running and the one that took 5 shots only made 10yards till he stoped and I nailed him in the head. I wish they would make a 40grn with a short hollow point so it would penatrate and expand to maby .35 cal. Any body use stingers?. I do not think they would make it trough the sholder bone at 75yards. I have a .270 and that is reserved for the long shots passt 150 yards. But at $16 for 20 it gets a bit costly to keep yourself practiced up enough to shoot good in the field. But the gun is verry acurate. under 1" at 100 yards with win power points. and the .270 is a bit over efective. Almost puts them in half!!!