LOL - I didn't know what a "stuffer" was. I kinda figured it was a self-feeder.
All depends on how much you want to PUSH your cattle. I PUSH my steers. I only have a paddock to separate feeder steers during the summer. So, I only feed out my September-October fall born steers. They MUST be finished by October (so they are either 12 or 13 months old). They will hang at least a 750# HCW, grading Choice.
Now, as Stickney said - genetics make a huge difference. Mine are PB Simmentals. I breed for breeding stock not carcasses (I NEVER look at marbling/carcass EPD's) - but my steers fit the bill.
I do NOT believe in giving them a bunch of bagged/processes filler. They have access to a small grass (some swamp) paddock and free choice dry hay 24/7. I feed WHOLE shell corn. Start off at 1% of BW daily, slowing increase each week until they are on full feed of corn fed twice a day.
If you feed ground cob corn (great feed), you will NOT get the growth. Many on here know my WSC diet. Many have converted!
WSC is about 8% less efficient as ALL processed corn - flake, rolled, cracked, steam, etc. But, WSC should cost less than an 8% difference - AND - it is healthier. If you have any "fines" (powder) in your feed, you can get accidosis. And young calves LIKE large whole grain/pellets vs powdered ground up feed.
I feed out only maybe 3-6 each year. I wean them "soon". LOL I have already started them on WSC in a creep feeder in their winter shed, so they won't be very stressed at weaning. Should stay right on feed.