you jumped into the deep end of the pool and it is deep.
i would set the rifle aside and learn to shoot at 600-1000 with a smaller rifle....308, 30/06 even 300 win mag.
as it is you have the gun and no budget for a decent scope.
buy a savage entry 300 wsm add a 6-24 x learn to load and shoot.
do not burn up your bbl and wallet with the current rifle