Just to restate my position, I detest muzzle brakes and if pads and proper fitting of the stock to the shooter can't make the recoil tolerable, get a different rifle..in a caliber you can tolerate. Stock fit/design probably has more to do with tolerating recoil than anything else.. Also if a rifle is simply madatory a device called a 'lead sled' can reduce recoil to nearly nothing. ..
Gunnut,
Thank you for the advice. It looks like I need to make my situation a little clearer though. The reason that I want to reduce the recoil on this rifle (without adding the weight of a mercury tube) is that I have had surgery twice in 18 months. Once to correct a herniated disc in my back at L5 - S1, and now to correct a ruptured diaphraghm that allowed all of my stomach to reside in my chest, wrapping around my heart and lungs.
I am hoping to get back to full functionality. It has been 4 weeks since the abdominal surgery. So, as you can see, adding weight to the rifle, or lugging around a lead sled with the sandbags or bags of lead shot needed - is not a really great option after an abdominal and spinal hernias. (It was, however, my first thought.)
The rifle is a 7mm WSM Featherweight that was given as a gift. I had a Simms Limbsaver installed on it last year. Getting rid of it isn't a real possibility. Nor do I want to. So that leaves me with installing a muzzle brake. Otherwise, I have a really pretty $1000 wall hanger.
Admittedly I have never shot a gun with a brake. On the other hand, I think I will take another look at the Williams Trimline (slimline?) after what CEJ1895 had to say. They can't be all that bad if Browning and Weatherby are marketing them, right? I guess if you are ever at the range with me, maybe you should just put your fingers in your ears tightly? :-)