Originally Posted by diderr
never heard a person shoot 2300 yards w/ a 257 wby. only a handful of cals I know will do that accurately 416 barrett, 408 chey, 50 bmg, 375 snip-tac, and 20mm vulcan.
The need for a big boomer to shoot LR is a misconception I wanted to debunk with this project.
As I mentioned in my full post, the key is will the bullet stay stable when it goes subsonic? If it does, you can use that bullet as far as you have elevation.
The 80gr Amax could also make the trip but the elevation required would make it mechanically silly.
I have shot my 6.5 mystic (260AI variant) to 2300yds with a 139gr Scenar. No issues with accuracy at all. I am waiting for some calm air to work my way out to 2600yds. Huge amount of elevation adjustment for every 100yds.
I know of shooters who have taken 6BR's to 1 mile so they can go much further. 105gr Bergers.
The accuracy at extreme range is greatly limited to the bullet and how well you dope the conditions.
Cannons are certainly not necessary.