A search of older posts will show that Brown Bear in not particularly reliable. While I've never had a problem with Silver Bear, Wolf, and many others, I have personally experienced issues with Brown Bear. My suggestion would be to ditch any Brown Bear first, and the corrosive second.
Note that some of the old corrosive ammo is beginning to experience high prices on the collectors market. Thus it's not the low end stuff we all remember it as . . .
Larry