You can edit amount of zoom by editing .TIK file of weapon in: Medal of Honor\main\pak7.pk3\models\weapons\
//========================================//
// WEAPON ACCURACY MODELLING //
//========================================//
// Kar98 Sniper: Max Eff. Range is 650 yds with a muzzle velocity of 2650 ft/s. (7.92 x 57mm Mauser)
bulletrange 4000 //the range at which bulletspread is applied (original)
bulletspread 50 50 150 150 //minpitch minyaw maxpitch maxyaw
zoomspreadmult 0.055
bulletdamage 120 //original 100
// tracerfrequency 2
crosshair 1
movementspeed 0.88
zoom 20 // <------- VALUE OF ZOOM