I assume the OP has not fired at 1000yd or beyond before. Hopefully he has fired a heavy recoiling rifle accurately (less than 1 MOA consistently). If not that will be kind of another step.

I was in kinda the same boat. I am a decent shot. Shot 1/2MOA on a fairly regular basis at closer ranges (100-400yd). The longer range bug bit me so I decided to buy a 12BVSS in .308 so I could shoot at our 1000yd range and do some light competition. Put a Vortex PST on it.

The rifle and scope are great. But, my skills need a LOT of improvement. Going from mid to long ranges is a HUGE step in shooting skill. After a year and I am still not good at longer ranges. I need to get a lot better with trigger and recoil management, and, WINDAGE!!!!

I guess my message is, you probably need to get a decent scope and shoot at the long ranges first before thinking about 1 mile shots. If you ever get bored at 1000yd, then think about a 1 mile setup.