You will love the 270WSM no matter which route you go. I have one other option you can look into for a factory rifle. The Browning M-1000 Eclipse. I can testify to the accuracy of this rifle. It comes with a 26" bull barrel hinged floor plate with removable mag. Free floated thumbhole stock. Out of the 7 different bullets I have loaded for mine the largest group mine has shot has been just over .900 at 100yds. So far 508yds is the Longest shot I have been able to take on a deer.
And here is the proof
This load is smoking. 130gr Barnes tsx, 75gr Magpro, WLRM primer, norma brass, bullet seated .005 off lands, 3508fps.
This group measured .138 which is the best i have shot with it I typically see about .250 with this load.