First thought...

Originally Posted by Spartacus
Wanting a 270, I would build a nice 270 Winchester. On a #2 barrel with a top-of-the-line stock. Yes, we would put some top-quality glass on it, and have a nice hunting rifle. This rifle could fill an Ark with dead animals, you wouldn't have a problem.
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The reason, I gave all this information, I'm getting ready to build a rifle with these specs.
Yes, a 270 Win.

Bingo. Easy button is to rebarrel a stock .270 Win with an 1:8" twist barrel and stoke it full of Reloder 26. No game animal walking God's green earth will ever know the difference. and no shortage of readily available brass for reloading...