I find these realistic because in real life you get shot no matter what you have a good chance of dieing. On the other hand you woulden't use the model or the ranger in combat due to the faults in the guns e.g jamming bullets and backfiring and stuff like that.
The model 1887's are just beast. I find they are a little inconsistent though, for instance I shot someone in the face from like a yard away and they just look at me and laughed.
I love the Model 1887, one game I seen a guy using them and I looked for him the entire game so I could take them and use them, I took them and nuked his team with his gun. I used them from level 67 up until I prestige and I love it when people use them and drop them because I rape with them. It is like the MP40, everyone says stuff about them like "if you use them you suck" and stuff like that but I don't have to use them, I can use the M4A1. I mastered the M4A1 but I use the Model 1887's to tear everyone up!