Okay, I did some investigating and there is nothing on Remington's site about the Copper Solid being a problem
So, I checked out the Hastings site and it has the following warning:
http://www.hastingsbarrels.com/safety.html
To sum it up, it seems as though the pre-1999 Remington Copper Solids caused some of the Hastings barrels to bend. None of them have blown up as of yet and Hastings does not recommend the use of pre-1999 Remington copper solids in their barrels. However, my BPS barrel is not on the list of barrels that have had problems with the pre-1999 Remington Copper Solids.
I think I should be okay with the new copper solid slugs I just bought. Of course, I still need them to group decently.