FrankenMauser,
Thanks for making my day with your description of the 300 Weatherby cartridge. It is priceless but probably about as accurate as anyone could devise. I love it.
I've been hunting big game with this Weatherby since 1982. Since high school, I have had the Weatherby imprinted in my brain. I knew, someday, I would have one. Like most hunters, when shooting at bambi, I don't feel any recoil but at the range, it's a different story. When I shot the Mark V with the muzzle brake, it felt like my -06 with a 180 grain bullet.
Regarding recoil, a few years ago, I learned a valuable lesson through a shooting experience. A friend inherited an -06, which we promptly took to the mountains to shoot. He took a box of 150 grain factory ammo and I took some 180 grain factory ammo. After shooting a few rounds with the 150s then a couple with the 180s, it was obvious there is a marked difference in recoil. I had no idea thirty grains would make that much difference so, based on that experience, I will be reloading my Weatherby rounds with either 165 or 150 grain bullets to reduce some recoil. To be honest with you, I really want to retire the Weatherby and use my -06. Each hunting season, I tell myself I will do this but I love the Weatherby so much, I have a hard time putting it down.
I know about muzzle blast with the brake.