Joe: I only have one Coyote with this rifle, no blow up with it at all. May have something to do with the bullet spinning fairly slow, a 1 in 17 twist is about half as fast as some of the .223's. My other 22-250 with a 1 in 14 barrel would sometimes have a blow up, but they wern't all that bad. I haven't tried any fast twist barrels in .224, so I can't tell you how they work. I do know that the bullet stores a lot of energy spinning, my 17 twist barrel gets about 125fps more than my 14 twist barrel does. Nothing is free however, I can't shoot anything heavier than 40gr in the 17 twist rifle. I may get to shoot a few more next weekend, may have to take some pictures to see what you think. I nearly never get any exit at all. Larry