Re: Distance between Objective and barrel???
I don't believe this directly effects accuracy... your resting/comfortable eye position may require some adjustment on the cheekpiece though. HOlding your head out of a comfortable position to see through the scope generally does not help in the marksmanship department. This does sound a little high...
I don't like them too close either... I like to leave enough room for small stuff to pass between the barrel and objective bell without getting stuck... briars, clumps of leaves, weeds, low flying geese, etc..