I say he should get one simply because he wants it but there is no way under the sun he would convince any knowledgeable shooter that one is needed on a caliber such as this one.
OBVIOUSLY YOU HAVE NEVER SHOT ANY HOT LOADS WITH SOME HEAVY WEIGHT BULLETS IN A 10" BARREL OFF-HANDED, YOU PROBABLY SHOOT OFF OF SANDBAGS DAILY IN YOUR BACKYARD.
THIS CALIBER IS A VERY MILD CALIBER, I DO AGREE WITH THAT, i EVEN HAVE MY 12 YEAROLD SHOOTING MINE, BUT WITH 100 GR HP'S, I WOULDN'T DARE THROW A 175 GRAINER IN THERE AND LET HIM SHOOT IT AT FULL VELOCITY
AS FOR KNOWLEDGEABLE SHOOTER, I KNOW MANY SEMI-PRO SHOOTERS THAT SHOOT 223'S (ENCORE AND CONTENDER) OR 308'S DAY IN AND DAY OUT AND HAVE A MB ON THEM, DON'T KNOCK IT UNTIL YOU TRY IT THAT IS MY MOTTO
WOULD YOU SHOOT A 16" TC 45-70 WITHOUT A BRAKE, BUDDY IF YOU DO YOU BETTER HAVE SOMEBODY BEHIND YOU TO CATCH IT, BECAUSE YOU WILL NOT HOLD IT, BUT I KNOW A GUY THAT SHOOTS A 14" 45-70 W/O M/B AND ACTUALLY LOVES IT (HE HAS THE MONEY TO GET ANYTHING HE WANTS) BUT HE ADMITS HE WOULDN'T HUNT WITH IT, BECAUSE OF THE RECOIL
IF YOU THINK THE 7 TCU DOESN'T HAVE ANY RECOIL, I WILL SEND YOU SOME LOADS THAT HAVE BEEN FIRED IN 5 DIFFERENT FRAMES AND BARRELS THAT WILL MAKE YOU THINK YOU JUST FIRED A 44 MAGNUM BLACKHAWK ONE-HANDED (NOT THAT THAT ISN'T MANAGEABLE, IT IS JUST UNNECESSARY WHEN YOU CAN USE A MB)
GRANTED I DON'T HUNT DEER WITH THIS, JUST HOGS!! AND AN OCCASIONAL PAPER TARGET (WHEN I AM FEELING FRISKY, )