Working up loads for new rifle using Reloader 7, H 322,and subject IMR 4198.The others are loading nicely at this forum's guidelines but in working up the 4198 I find a full case and compressed load at just 17.5 grains.Standard, what else, Remington 221 brass sized and trimmed to 1.395" How do you fellows get in the 18 Plus grain loads I see listed?