Yes, it can be loaded without cocking the hammer.
The gun in your photo is a break down shotgun, it is part of what Rossi calls a matched pair, it can be purchased with an extra barrel to swap on to it, .22LR, .17HMR and also some larger centerfires.
I purchased the same rifle in 20 guage synthetic with a .22 barrel and a real nice carrying case for all three parts for $225CN. You can even opt for a third barrel, cambered for a muzzle loader. So you know now though, you have to buy it all at once, you can't go back for the second barrel if you choose that route.
It is an excellent shooter too!