If your focus is on building a better body or maybe even in being a body-builder, then think about this. When we are starting out doing the prescribed 3 sets of 8-12 reps of dumbbell curls, you may be starting with 20 or 30 pound dumbbells. And if you have massive guns and that is working for you, then read no further.
If you are willing to experiment and go deeper, then read on.
First, consider a pull-up. Say you are a man between 150-220 pounds. Regardless of how you do a pull-up, whether strict or kipping, you are lowering your full bodyweight to the full extension of your arms. That eccentric contraction is a massive load on your biceps. Sure, it is meant to focus on your lats and other back muscles, but your biceps take a brunt of it as well. Considering your bodyweight, you would have to lift 75-110 pound dumbbells in each hand to equal the eccentric load of a pull-up. What if you can’t do a pull-up? Find a bar or stand on a box that allows your arms to bend slightly as you reach the bar. Then jump to a full chin-over-the-bar pullup, hold, and then slowly lower down. That eccentric load will be good for lats and biceps alike.
Second, for the advanced lifter, nothing makes my arms more sore than repeated hang cleans with a heavy weight. The same is true for hang snatches, but maybe not quite as much. It is a distant side effect of Olympic weightlifting that can build massive guns. My biceps are crying right now, so this is the main reason I’m writing this. I did sets of 3 hang snatches yesterday and I can surely feel it today. Consider that you are lowering a heavy weight, much heavier than you’d ever do with a barbell curl, with a huge eccentric load. The eccentric loading is where most muscle growth occurs. You can do this with any barbell with or without bumper plates since you don’t need to drop the weight on the ground. But bumpers help if you got them so you can do full lifts.
Try these two movements and see if they work for you. And if you don’t grow, you’ll definitely get stronger.