I have owned 2 MK's in my lifetime one was a shooter the other was not, both had poor triggers which were cleaned up to be much better by my gunsmith. Both harvested game and functioned fine. My shooter was a 7mm rem mag, it also kicked like a rented mule no real recoil pad and the cut out synthetic stock it wore major contributors to felt recoil.
As far as 7mm rem mag IMHOG2G for anything in NA with the exception of the BIG BEAR's (grizzly and browns). It is my primary choice for CF, harvesting everything fromyote's(little big for dogs,though when huntingbig game and an opportunity arises I rarily shy away from sending lead

)to moose at distances from30 to 500 yards. Lots of bullet selection, being your going to reload tailoring it for the usage should be fairly easy. I have owned4-7 mm rem mags and yet to have one I couldn't get shooting. My current one is a custom build on a 700 action. It's my go to/happy place....it just shoots

!!
BTW Bushnell Elites are a good scope, should be pleased with its performance.
Enjoy and good luck.