Thanks for all the responses...I appreciate the feedback. This kind of feedback, especially the critical kind, is why I joined the forum. I feel like I have the technical skills to build nice pieces but I definitely lack experience in fine woodworking. Your feedback helps a lot in my personal woodworking development.
The case if for a friend of mine and my fathers. He's the only non-family member that hunts with us up at our property in northern Wisconsin. My dad promised to make this display case for him years ago before he passed. That task has now been handed down to me.
The rifle is a Winchester Centennial '66. My friend has named this rifle "Roy" after my father so I figured that I should try to do a decent job on this case to honor his namesake. My father's first rifle was a model Winchester model 94 30/30 which was also the first rifle that he purchased for me when I started hunting 36 years ago. I have my dad's 30/30 now along with his old model 94 22 magnum which I will eventually build another display case for. The Centennial '66 is very similar to my model 94's except the wood is nicer, the brass is shinier, and the barrel is longer, thicker and octagonal.
I think I will mount the rifle at an angle, maybe not quite as angled as the picture below. I would prefer to mount it level but I did make a mistake in the build by not increasing the height of the display case by another 2 to 4 inches. I think the rifle has to be angled a bit to provide a bit more relief from the door frames.
I had thought about cutting down the top and bottom frame of the door from 2" to 1 1/2" but I built them at that width to hide some LED light strips. I test fit the light kits this morning and although I like how they light up the back of the display case I'm not a fan of all the little white dots of light that reflect off of the rifle. After sharing some images of the lights with my friend he likes them so I will be leaving the door frame at 2" thick to hide the installed lights.
Now I just have to trim down the mounts, fit the lock, route a few channels on the sides to hide the wiring, install some 1" angled walnut strips to mount the lights to, finish beveling the door frame, route out a 3/8" rabbit to hold the glass and then do some final sanding before I start finishing this.
Thanks again for the feedback and thanks for sharing some other examples of rifle cases. I really liked David's design and I may have to add some walnut shell holders based on how well his turned out.