Just curious, what gun are you going to shoot? I shoot 250gr SW over 2 pellets of 777 out of my TC Triumph. Accuracy is great out to 125 yards (have not shot beyond that). Nevere had the bullet fail, but I have also heard the horror stories. Advice about finding the one for your gun already stated here is the key. My only advice, if you are going to go with the SW / SST, would be to get the non-bonded or regular version for deer. I think the bonded bullets are to tough for whitetails, IMHO.