I have tried them. They definitely shoot diffrent than the bullistic tip 20 gr. They shoot well, but not as tight as the bullistic tips. I only killed one fox. I intentionally took a body shot. Normally I take head shots. It did run about 30 yards. I was unable to find any entrance or exit hole. Needless to say, no fur damage. Tough to give an opinion with only one kill, but that's all I have.