As you likely noticed by now, the BR2 is the benchrest large rifle primer that CCI offers. If you got them for the price of the regular LR caps then you probably got a good deal on them. And as long as you are not going to use them in magnum case you should be fine. I say this because I tried them in a .264 Win mag and got a couple of hang fires. I did not like that. I have used them in my .220 Swift, my .243 and my .308 but as they cost a bit more than the regular primers and the accuracy difference was nil I quit buying them.
I would just use them if I were you. Good caps them be. I like them anyway.