I am 82 years old and just had tenodesis surgery. I have been successful shooting 625yds with 77gr SMK with Athlon Midas Tac 6x24x50 MRAD. Before I check-out I want to shoot 1000yds. That distance is a bit of a stretch for my 223 so I ordered a 6.5 Creedmoor. I would like a better scope. I would like advice on scopes from long range shooters. I wear prescription glasses and my budget is $850.