I actually find the recoil in my 300 RUM to be more harsh with 180g than 200g bullets. The recoil with the 180s is 'snappier'...harder on my shoulder. I'm about 190 lbs and my RUM doesn't have a brake on it. I shot 14 rounds at the range last night off of the bench and I'm slightly sore today. On days when I go through 20+ rounds, I can definitely feel it the next day (or two).
I've thought about putting on a brake, but I'm concerned about ruining my hunting partners' hearing. So, I suck it up at the range. Never shoot more than a couple of rounds when out hunting, so the recoil is never an issue out there.
--Ben