I have had at least a half dozen 7RM rifles. Never killed anything other than paper and white rocks. Understand, this was from the days when 7 mags tended to weigh 1 1/2 to 2 pounds more than a comparable .270 or .30-06. I was not willing to pack the extra weight for the slight ballistic advantage.
Back in my gun of the week days, I did score a 7 Wby out of the South Gate place built on an FN action that was light enough to use. With a full 6/10" freebore, one could seat the 160s long and make it hummmmm. I kept that one and hunted with it for a season, and it is one that I regret selling, even though I dislike the Weatherby stock design. High tech synthetics were just coming into their own at the time, so that could have been solved.
As I have grown older, light is better and I find that my most used rifles are .308, .243, and .223. Modern bullets such as NP, bonded and mono metal have put the smaller calibers on steroids. I haven't hunted with any of my .270 or .30-06 rifles in many years. I have sold all of my belted magnum rifles. A 7 was the last to go, some four or five years ago.
Best wishes,
Jack