RE: BEST SERVICE RIFLE EVER, WHICH IS IT?
Three service rifles that changed the world: Enfield 3-band musket, Enfield .303 (either SMLE & its offspring), and the Mauser 98. The service rifle with best publicity & promotion: M1 Garand (Hollywood made it famous). The most under rated service rifle: Soviet Mosin Nagant 91/30. The most feared service rifle/carbine/assault rifle: anything in 7.62x39 especially anything copying Comrade Kalashnikov.
My all time favorite (it saved my butt more than once): M16A1 & A2
Heaven is best viewed from a deer stand at sunrise in the forest