Sounds like you have a good handle on it.
I have a wildcat based on the STW case a 270 STW.
And I have a outright 28 Nosler.
I like both.Both are dammed accurate
The 28 requires feed rails to be altered for sure.
In this day and age it's going to be what you can find in cases.
The 28 Nosler is modern case design without a belt.
I had no problem getting 175g Accubonds to 3200fps with N570.
It shines.
dave

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Only accurate rifles are interesting.