come on guys,,,going to 1000 isnt that tuff,,,hitting on the other hand,,,i have been there many times,,with black powder,,,45-90 and peep sights,,,BPCG,,,just need lots of elevation and windage
my 308 wears a 20min rail and a 30mm tube 8-32x50 scope
like emcon5 said,,, you will more than likely need a rail fix,,,i would suggest a 20 min. rail,,,unless your scope has a lot of elevation adjustment,,,,and i would also suggest you use a 168gr. or heavier bullet,,,my rifle like 175 nosler match,,,if you reload that will help too,,,,feed it what it likes and you can go there with the rig you have + an elevation rail,,,,
i would also tell you that it will help if the rifle has a really nice light trigger,,and you pay close attention to it,,,,trigger control is your friend here,,,,and follow through,,,stay with the gun,,,after recoil it should settle back to the target,,,lots more involved out there than the gun and scope
you can do it,,i know you can
i will toss this on the table too,,,i think most middle of the road glass today will be better than 20,,,maybe 15 year old glass of the past,,i can say this because i have both and when you put them both on the bench at the same time,,,well you just have to look,,,and you will see
my .02
ocharry