Most 3D sniper games are too simple, you just shoot straight to the target. In this game you will be able to customize your ammo and weapons, and choose your favourite range. This game includes a good enough approximation of internal ballistics, it has a great external ballistics simulation, and terminal ballistics. The most important physics factors are modeled into this game: gravity, drag (G7 Ballistic Coefficient), spindrift, wind, and scope configurations (elevation and windage). There's also an in-game and easy-to-use ballistic calculator.