RE: i am looking for a gun?????????
Of those listed in the original post, the 270 isthe clear winner IMO. Delivers good energy on target at all reasonable ranges and has moderate recoil.
I don't like a 243, I justcan't help it...
A 300 WM is more than needed for deer.
A 30-30, not nearly as versatile as the other three and has a more limited effective range.