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This kinda pre-dates dially scopes when if you wanted to hold fur to 400 or whatever, you needed a faster flatter shooting cartridge. Hence 270 was standardised around 130gr (which only needed a 1:10...

I've seen that people are suggesting sticking to bonded or monolithic bullets with that one to avoid them coming apart. Even more interesting is the insane amount of spin drift such a high twist...

Go to the extreme and bullets can blow up mid flight if they are massively over-spun.

Faster than necessary can be a bit detrimental to accuracy, on average. Bullets behave a little like car...