I've had this since last spring, and I've only shot it a few times.
It has a Volquartsen trigger (2#) and a Leupold VXII 1-4X scope.
With 240gr JSP handloads, I'm getting 1.5" at 50 yds. MV is around 1400 fps. If it does 3" or better when I shoot it at 100 yds, I'll be happy.
I plan to use it for hunting blacktail in western Washington, for relatively close shots. Probably 50 yds or less but no further than 100 yds.
I have yet to take a deer with a .44 Mag, but I understand they work just fine as long as you keep the shots close. With 240gr bullets and a 100 yd zero, a ballistics calculator shows a 17" drop at 200 yds.
Not impossible, but a ballistic reticle and some experience in ranging might be indicated for 200 yds. (17" is the height of the deer's body!)
In terms of "home defense", the 77/44 has a limited magazine capacity (4) and is relatively slow to reload. It can fire .44 Mag downloaded to .44 Special levels, for reduced recoil and less concern of penetrating walls and injuring someone in the house next door. However, I don't think you can buy ".44 Spagnum" ammo, so this option isn't available if you don't reload.
While it might look kind of kludgy, you can get a Weaver rail adapter that clamps into the Ruger integral mounts, and this would permit use of an Eotech or similar red dot sight. If I had to use a 77/44 for home defense, I think I'd do something like that.
IMO, it's a neat little carbine, but it's not a long-range deer rifle and it's not a 12 gauge pump.