I'm gonna' definitely go with L96A1 with a silencer. However, I have like preferences because like modifications of the L96A1 (Ghillie, Arctic Wolf) all have small differences that change everything. I would definitely go with Arctic Wolf for no scoping, as it is little good for anything else, Ghillie for accuracy, and normal for just whatever. BTW, SR25 is... always 2 shots. Unless the person is wearing a heavy vest, in which once in a blue moon they'll tank 2 shots and you'll have to go for 3.
SR25 never needs 4 shots to hit. maybe 4 shots total if you keep sniping them, but it only needs 2-3 max.
-EDIT-
Oh yes, this does belong in the General section. It's there. use it.