It wasn't published in any of my manuals, but somehow I tried 32.0 grs of IMR-4198 pushing my cast lyman 204 gas checked 35 cal slugs in a pump 760 35 Remington and completely struck gold. It was accurate, clean burning and duplicates factory ballistics with a 210gr RN going 2150fps. So far i haven't done that with SR 4759, but I do like in my 223 pushing a cast 63gr RN custom cast gas checked bullet. I think I could run gas checked slugs the rest of my days and be perfectly happy.
