I pick the M95 because you can damage choppas with it.
Also, with Magnum ammo even a bodyshot will do something like 95%, enough to kill someone who has suffered minor damage.

Protip: Picking Magnum ammo reduces your bullet drop.
GOL has zero sway and the bolt action is faster though. So it's really up to you. I did snipe out a blackhawk pilot with the GOL once though. Loled.