I agree, recoil is bit too high compared to real world.
I own serveral guns from Semi-Auto SAKO M92 7.62x39 and AR15 5.56x45 assault rifles to Sako TRG-42 .338 Lapua Magnum sniper rifle so i can pretty accurately describe what kind of recoil real guns have.
SAKO M92 with 7.62x39 round, from kneeling position much less recoil than 6.5 round in ARMA3, aim wont lift up much as in ARMA3 and you can re-target much much quicker than in ARMA3.
AR15 5.56x45, even less recoil than Sako M92 7.62x39 round, you can pretty much keap it on target with only small recoil, more accurate at short and medium ranges than 7.62x39 but with less power on impact.
Sako TRG-42 .338 LM, while standing and kneeling heavier recoil than 6.5 round in ARMA3, less recoil on prone, can re-aquire target much quicker than in ARMA3's marksman rilfe with or without bipod but requires manual reload since my gun is bolt action rifle.
My weapons are litle modified for my personal use, different stock and usually SCOT-18 GipPod at front in my 7.62x39 and 5.56x45 guns.
Sako TRG-42 sniper rifle is equipped with bipod.
Edit: And yes like Roddy15th said, human body naturally tries get back to target quick as possible, so in ARMA3 it shouldnt take the aimpoint so far away from target.