Ralph I hate to say it but heritage breeds do not fill out hardly at all. My 9month old Royal palm toms dressed out at twelve pounds each but they put on alot of weight the last few weeks. I put them on a low protein cow feed and it put a nice layer of fat on them and they were nice and juicy. Not dry at all. So if you wantthem a little bigger I would putthem on straight corn or a mix for filling out cattle. It has mollases to so they get some nice flavor in the fat!!