I built a 6.5-06 Shilen select match barrel 8" twist in 2015 and shot a couple animals with 120 gr Nos Bal tips.

I built a 25-06 Shilen select match barrel 9" twist in 2016 and shot one animal with 115 gr Nos bal tip.

I like the 6.5-06 better.
Getting the 6.5-06 dies built by Forster and Lee is a hassle.
Necking down 30-06 brass to 6.5-06 is a hassle.
But it is worth the trouble to me.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps