Accuracy wise sniper and magnum are identicle when shooting from cradle tower to tower.
PP7 is more accurate than Ar33 when shootign at the tower from here, the grouping is way smaller. even when using single slow shots with ar33 so not to recoil much.
But when shooting tower to tower they are about the same.
I like bunnyhopping down the ramps, you can get some insane speeds and do big jumps.