sniper rifle-depends on requirements.
military 1000 m max effective with m24 and 7.62 175gn m118 lr. at a MAN sized target. 168 gn m118 sucks past 500 but effective at man sized at 600
Police- 2" 200 m. m24 m118 special ball 168 gn
I trained for both and these loads were developed specifically for the m24. Different requirements for different situations. SRT(SWAT) we trained to shoot a hostage taker and disable their ability to to pull the trigger and kill the hostage. Field we train to hit a man as far as the ammo and rifle can shoot.
There is no reason a Saiga could not