I currently use a bolt action Remington Model 700 .270 with a Bushnell Buckmaster 3 x9 40 mm scope.
However, when I got back into hunting 20 odd years ago, I started back with a Remington 7400 Auto-loader in 30-06 Springfield.
I give the edge in knockdown power to the 30-06 but not by much.
I disliked the action on the auto-loader, although it was not the rifles fault. It was an older rifle and had a few issues that caused me to move on to the bolt action.
One of my issues with the rifle (auto-loader) was an annoying habit of a set screw backing out of the carrier bolt. This caused it to scratch the second round in the magazine as it fed the top round into the chamber.
It became so pronounced (before I realized it,[it was a borrowed rifle]) that it impacted the top round in the magazine and jammed it rearward in the magazine causing it to NOT chamber the first round. (To chamber the first round, 1st you had to insert the magazine into the bottom of the rifle then pull the carrier bolt back completely, then release it. The spring action of the carrier bolt slammed closed - picking up the first round from the magazine and feeding it into the chamber as it did so).
This has lead to 20 years worth of ribbing from deer hunting buddies for trying to kill a deer without a bullet in the rifle. And, unfortunately for me, it happened to be a 10 point Buck with a drop tine on the right side. Let me tell you, a deer can hear the metallic click of the hammer hitting the firing pin from 75 yards away. A second shot was out of the question.
The second annoying incident was the magazine release. The release was obviously getting worn when I used the last time. This time my missed opportunity was a 8 point buck. I had sighted the cross-hair's on the deer and just as I squeezed the trigger the deer turned. I missed completely, but to my relief the deer didn't run (that was strange all by itself). Now this was the part about the magazine release. The deer didn't run, so I get another shot at it. Right? Nope, wrong. The damn release - released the magazine and it was on the floor of the deer blind. I looked at the deer - who was now looking in my direction - and retrieved the magazine from the floor, inserted it into the magazine channel on the bottom of the rifle and it clicked into place. 2nd Deer hearing notice of the day is that yes, a deer can hear the magazine click from 125 yards away.
Now, why the buck decided the noise of the magazine clicking into the rifle was more run worthy than the report of the 30-06 round I'll never know. But, he took off and the last thing I saw of him was that big bushy white tail sticking straight up as he disappeared into the woods.
I gave the rifle back to it's owner (who had a gunsmith fix the damn thing) (AFTER I missed two deer!).
And I got the bolt action for hunting instead.
I've never had a single problem with the bolt action and I've never needed a second shot since then.
Hope my rambling on helps.
Adrian