My dad and I got a FA 475 Premier with a 4 3/4 inch barrel last fall. We have been just loading light loads of 400gr cast at somewhere near 900fps. We are going to step it up every 200 rds or so till we get to about 1100fps. That's the sweet spot we're shooting for. The gun is a dream and the first short barreled big bore we've had. The 475LB is a great caliber for those hunters who subscribe to heavy and slow winning the race.