While all types of rifles can, and will at some point (without proper maintenance), fail in the field, there are many good rifles of all action types being used in the field every season.
There are lemons in every type, as there are good, reliable rifles. Those with fewer moving parts and less complicated designs are less prone to problems.
We all have our preferences in action types and manufacturers.
I have used a friend's Rem 7600 in 35 Whelen on a cow elk, and it worked well, as it has for him for many years. Not a bad rifle, just did not ever pique my interest. I know that thereare many back east that use and love them. There are quite a few out here as well, you just don't see them being packed as often as they used to be.
For myself, I prefer the left handed bolt actions for my main hunting rifles, but my heart will always have an affinnity for the lever action, and I will always own and hunt with them too.
My main back up rifle for guiding, atv/horseback hunting and archery hunting has been my Browning BLR in 358 Win for over 15 years. I also have several Winchesters and Marlins too.
The single shots are also very classy and strong and reliable.