The recoil will be just as manageable as it was between the introduction of the 7mm RM in 1962 and the recent proliferation of muzzle brakes, which must somehow correlate with the fluoridation of our water and whatever other Commie plots have sapped our manhood. [This is humor - don't get all bent out of shape over it!]
Seriously, there is a qualitative difference between the unbraked recoil of a .300 WM and a 7RM. The 7RM is basically the same as a 30-06, plus a modicum of "jet effect" and the slightly increased weight of the powder charge, but not at all unpleasant. You will notice a significant decrease in "beat down" if you switch to the 7RM from the .300WM, assuming no muzzle brakes on either.

Now, that said, my best bud has a .300WM with a muzzle brake on it and that rig is no-kidding like shooting a .243! Not sure what brand of brake it is but he built his rifle 10 years ago so it's nothing super Gucci modern. You might consider putting your money into a brake for your .300WM - just a thought.

Cheers,
Rex

Last edited by TRexF16; 12/30/21.