I chronograph a 30/378, 180 grain factory ammo. Got 3,200 FPS. Which is (I believe) what the factory claimed. I was impressed. I told the owner that the recoil was about the same as my 30/06. Then I asked him if he ever shot the rifle without the muzzle brake.

He said "Yes, once, then I flinched for a month!"

If you reload, there's no such thing as an obsolete cartridge.

Once you render an opinion, you open yourself up to criticism.