If there ever was an overrated cartridge, it is the 7mm mag. You could make the same comparison of a 7mm mag and the 30-06. I doubt there are as many elk killed with a 7mm mag as with the '06.
I would rather take a beating than shoot a 7mm mag...
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It's amazing how different people have 'different' attitudes and opinions towards stocks, cartridges, scopes, Ford/Chevy.
I'm not here to argue w/you. I have the SAME feeling toward a few cartridges that many around here love. There are some rifles/cartridges I have absolutely NO USE for and would not BUY nor keep if given to me.
As to the 7 RM, maybe it was 'advertising $$' but Kurt Darner 'said' the 7 was his favorite mule deer cartridge. Maybe true, maybe no.
After my experience w/a 77 -338 WM, for a while I 'said' I'd NEVER have another 338. I did figure out that it was the sorry stock 'fit' and absence of recoil pad that made the difference.
The 7 RM is ONE cartridge that is in the top % of FEW that I'd consider to be the ONE rifle-cartridges combo for myself.
Have a Good Day
Jerry