A quick look through my reloading manual found the velocity of a 110 grain jacketed bullet in a 300 Weatherby Magnum to fly at 3829 feet per second using H4895 with a starting load of 67.6 grains of powder. The never exceed load is 76 grains. I can't imagine a jacketed bullet not fragmenting at those speeds...but I don't know. Even the 223 has loads reaching 3600 fps. There's a round called the BOZ that is in development for the military only that may be getting these hyper velocities? Interesting question....
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