While I have not used the Hornady load, you need to first ask "what realistic ballistic advantage is to be gained for what is basically a 75 to 100 yard handgun cartridge?". This load was designed for use in tube fed carbines, where any ballistic advantage is still quite open to question. To answer your second question, given the precedent of the .308 Marlin cartridge and its bullet, no, the bullets will not be made available for handloading in the foreseeable future.
