Youi are welcome. Going to shoot 1000 I would go with 26 inch. Hevier on bench is fine, more better stailbity wise.

Of course, lighter bullets launched faster will typically be faster at 1000 yds than a heavier bulllet however, they will also be influenced by the wind to a much greater degree. So there's a trade off to account for.
I am not sure that is correct. Heavier bullet carries more speed? - though there is a cross over in very heavy