A few years ago I built a 6mmBR rifle with 10" twist and started reading forum posts about what bullet would stabilize.
I noticed some posters could and some others could not with the same bullet.
I knew with a 14" twist bullet I could stabilize a 75 gr Vmax, sometimes.

So I settled on a 95 gr Nosler ballistic tip. I shot two antelope opening morning in 2016.

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6mmBR 1.2" 95 gr Nos Bal Tip moly 29 gr IMR4166 2800 fps chrono 27"PacNor mountain taper polygonal rifling barrel

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