There has to be a reason for it. Is it the best overall round? Nope. That honor goes to the 375 H&H. But the 7mm Rem Mag is a very, very good round.
1. If the 7 RM didn't perform well on a wide variety of game & varying circumstances... it would NOT
continue to sell as well.
Sales numbers tell the story how hunters feel about it.
2. I've had more 300 WMs & 7 RMs than any other magnum rifles. Had a Ruger 77 OG in 338 WM for a SHORT time.
That stock with that cartridge was BRUTAL. My 8mm RM is easier to shoot than that OG 77.
In the last 5 yrs I have come to realize that for Deer (all), Elk, Moose, & Bear the 7mm RM is my pick for ONE rifle for
Big Game. 458 Win Mag (Mr. Phil) says the 30-06 is entirely adequate for "Brown Bear".....so the 7 RM is more.
I'm now 71 and will NOT hunt the big bears--- Deer, Elk & Moose are well covered by the 7 RM.
It deserves its respect.
Jerry