Back when, I WAS a Gunsmith, ( Years ago), I would build, several, "Spec" Rifles in, various Calibers, every Year on, Customized Mauser, Actions.
Back then,, the .270 Win and .280 Rem's, ALWAYS sold, the BEST, followed by, the .30-06 and .25-06 !
The "Big Money", Sheep Hunters ( the Grand Slam, guys ) in those Days, preferred, the .270 Win.
Might try, a 6.5-06 Ai or .280 Ai as they are, real Popular, Today !
A Rem 700 with, a Timney "Elite" Trigger and a descent quality Barrel, Bedded / Free Floated & WITHm a Target to, PROVE Accuracy, SHOULD,.. Sell !