Both sniper rifles are in the second damage tier, so I always use snipers for piercing effect and lovable headshot splatter.
Anyway, the setting is the motel (Expert, Solo, Undead Carnival) I just looted a lovely hunting rifle from the billboard that is like a 90% spawn chance? Nevertheless, I made my way to the hotel office lunch room and found a jerry can.
I usually carry these throughout the whole map as a challenge so I don't know
if I can describe my giddiness but either way I quickly made my way to the second set of stairs to the second floor to get out of there. Just when I thought my favorite area was gonna be a nice calm walk in the park, Bam, there goes the tank song. I immediately made the noob choice and hid my back against the wall in a random bathroom leaving the gas can at the door, and crouched for maximum accuracy. Then I looked over 2 inches from my face and there was a explosive rounds container right there like gnome chompski right before he busts a big one. I used it, and waited for the tank. Just my luck, however, the AI decided to do a L4D1 on me and climb in the bathtub. I tried to panic but didn't have time. I could see his thick gross faceshoulderneckthing creeping in on me. He used his throw attack and I immediately shot the gas canister and fired away at his face. I thought, "I'm gonna die in one hit, but let's go". After spraying my 2 shots per second hunting rifle in his face, he raised his arms and threw the rock. The door ate it outside, thankfully, there was a big dust cloud and afterwards, the smoke cleared and the music stopped. I had used a little more than 80% my clip, and he was dead.
The high power and firing rate of both sniper rifles even without explosive rounds is quite devastating to a tank, and now when I fight a tank, I throw my molly and spray my rifle in his stomach, and he goes down faster than he can reach us if I have at least two AI's with shotguns, or one player with a shotgun. Even though it only does about 30%-40% up a shotgun, it has range, and if you crouch you can fire around 12 bullets before he gets to you, if he's running at you. Considering he needs to be much closer than the rifle, let's assume the range is halved before the gun reaches full potential. Four shotgun shells do x damage and the rifle does 30-40 percent of that. (30x12=360= 3.60)-(40x12=480= 4.80) shotgun shells. That's only a 40% decrease of one shell, to potentially getting off another shell entirely. However I am not saying this is a good alternative by all means, auto shotgun the crap out of him, but hey if you like popping heads as much as I do, those four shotgun shells before your buddies can tear him apart and after that he's in the blender.