My deer gun is a commercial Mauser in .243 made by Interarms in the '80's and '90's. I really like it. It shoots tighter groups than I can, and I've only put 90 grain hunting loads through it. Very light recoil, and fast.
The 6.5mm calibers are much trendier (and higher velocity) right now though, and the .243 can be a little pricey for factory ammo.
That 6.5 is an astounding Rifle. My Dad was just showing my Wife and me a Tikka that he recently put together in 6.5 Creedmoor. One of his friends had taken the same rifle buffalo hunting and the whole group was raving about how nice it was.
I've got trijicon, meprolight and tru glow. The tru glows work in daylight too. They have fiber optic in addition to the glow in the dark stuff. They are the biggest and bulkiest. The trijicon HD are really nice, but big $$. If it's something your trusting your life with, Id get the trijicon with the front site a different color. Just my .02