Deep impact increases the penetration of your bullets. It can be very useful for following targets as they duck behind cover to finish them off. Alternatively you can actively test fire single shots along walls of known camping spots to look for targets. As soon as your crosshairs change to indicate a hit open up and take down a totally unexpecting target. Some weapons already have good penetration already so either do not need it, LMG’s, or can shot through walls and take down targets very quickly, Barret. Think though as some maps have more options to shoot through cover than others so steady aim may make more sense on these maps.
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