It looks as though the first thing that's going to happen is that you're going to get what we call 'snipers eye'. It's caused by the telescope being too far to the rear and when the rifle recoils, the ...................... anyway, it's quite painfull. I'm fairly confident that you are going to get 'snipers eye' at every shot unless you learn to move your eye away inbetween the round going off and recoil taking place.

The telescope needs to be MUCH further forwards. Mind you, having suffered snipers eye - once - I think you ought to have another olook at the mechanics again.

I'm sure the others will offer some similar advice