24 or 26 inch barrel for a 300 Win Mag?

I have a Remington 700 LSS 300 Win Mag with 24 inch barrel, and was wondering for shooting at long range and using Berger bullets, if I should have a 26 inch barrel instead.

Thanks everyone for the replies.
If its shooting good or if you can get it to shoot good, I would be satisfied with the 24". I prefer 26" in a magnum. If I was re barreling, I would go 26"
 
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