How long have you been shooting at 1,000 yds, what type of rifle, scope, barrel and what caliber? Where do you plan to shoot? Got any pics of your shooter?
I can suggest any true precision ammo for long range shooting be done on a single stage press. Use benchrest components. I own a few Dillon XL650 and use it for pistol ( 9mm, 38 super,.40SW and 45 ACP) and for rifle ( .308 and .223) Note: for rifles I load for AR's and a couple FALs. Any Bolt Action loads are always done on my single stage press.
I'm no expert , but have had acceptable results out to 800 yds. using my loads in my bolt guns. I always handload my precision ammo on a single stage press.
Years ago, I took part im an informal 600 yds.- 1,000 yds. sniper type match out in Sacramento Valley and had my hands full reading the wind and dealing with mirage, It was tough to range the target. I used my 300 Mag PSS. I got outshot with a buddy sporting a 338 mag AI. It's fun but oh so difficult..