Finding a good 1000yd rifle
Some where on a forum was a discussion about 1000yd rifles.
The record holder, for a long time, on accuracy was held with a .30-378 Weatherby with a 28 and a 30 inch barrel.
Searching the Internet will turn up more particulars.
A hand full of very slow powder is hard on barrel steel.
Stainless ,or chrome lined is the best.
Takes all the length to burn the large amount of powder and schieve maximum velocity with the heavy bullets.
You would probably want to buy a long action and have a custom barrel screwed into it.
A Weatherby Mf V or other long action or a Remington or other long action rifle might be affordable. Then buying the barrel and fitting it to the stock would be the major expense. Polymer an fiberglass stocks might not easily be modified but then it might not be a problem depending on contour of the barrel.
Interesting note, i found out is on Springrield .30-06 service rifles the ladder ssight does not go straight up and down but is canted slightly to take into account the Coloris effect as the range gets out there.
Something like 2 inches at 1000 yards.