I have used a 3" high @ 100yds MPBR for my 7mags since 1980. It is very effective to say the least.
Absolutely !
It does NOT take a lot of practice shooting to SHOW its effectiveness. After I tried it a FEW Xs, I've never considered much of anything else.
That's why I like cartridges that yield 3100 fps and more. The faster----the flatter.
Just so I don't get called on the carpet>>> GOOD bullets are a must, Both in makeup & BC.
Jerry