Not gas checked throws a monkey wrench into the works. Practical upper limits of plain base bullets falls short of your 1600fps goal. There may be/are excwptions but you gotta have your ducks in a row and even then it's not terribly likely that?accuracy with no leading will result.
Plain base .30 bullets: to me spell 1400fps and less and powders like Unique and Bullseye. That's not a bad place to be though. Accuracy is to be expected, and after all a bullet only has to be moving fast enough to punch through both sides of a paper target. Hunting? Yeah it's possible and in the hands of a steely eyed woodsman a light load like that will knock a deer ass-over-tin cups. I'm not always that guy and so I prefer my cast .30 hunting bullets to have a little more moxie.
"You can lead a man to logic, but you cannot make him think." Joe Harz
"Always certain, often right." Keith McCafferty
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