MAGNA Port will do the job for you and the heck with the comments. It’s your rifle and your hunt. Forget the sideline interference. Just make sure the brake can be removed if YOU want at some future time.
Good luck and good choice.
The purpose of MAGNA Porting is to reduce muzzle jump. From their own advertizing, it will only reduce felt recoil by about 15%. A muzzle brake will reduce felt recoil by up to 50% or more.
I bought my .375 RUM in 2004. At that time I was 58 years old, 6'1" and 220 #, lifted weights 3 times a week and golfed 4-5 times a week. Since the late '70s, throughout the year, if I'm home, I to to the range every week and shoot 3-4 pistols, including one of my .44 magnums and 1911 .45 acp, 2-4 rifles at the 200-430 yd gongs, then shoot 3-4 lines of 12 ga Skeet. I re-stock or modify the stocks on all of my rifles and shotguns to fit me.
The first trip to the range with my new .375 RUM, it's recoil was so bad that I barely got the scope zeroed. So I sent it to a shop in Arizona to have the barrel ported. When I got it back, I took it to the range, and after only 3 or 4 shots, the ported end of the barrel blew off. I sent it back to Remington for a new barrel, and when I got it home, I had a local gunsmith install a KDF muzzle brake on it.
That brake made it comfortable enough to shoot off the bench and prone, and I was able to develope a 3-shot moa load with 300 gr Barnes TSX bullets. After my first trip to Zimbabwe and South Africa with it I also installed a recoil reducer on it's stock, and have taken it on another South African and an Alaskan hunt.
I liked that KDF muzzle brake so much that when I bought my .300 Wby I had a KDF brake installed on it before I fired my first shot through it. That quickly became my favorite rifle and have used it on multiple hunts here in Montana and Mozambique, Texas, South Africa, Canada, Azerbaijan, and New Zealand.
On my first hunt in Mozambique, I shared the camp with our own
@BRICKBURN. The Sable weren't cooperating enough for him to kill one with his sharp sticks, so on his last day, he killed his bull with my .300 Wby.