In my pre +P I have the BB 148/150 hard cast full WC. There are interesting articles on the advantages of the WC. However, after reviewing many posts on this site I'm going to change to BB 158gr. SWCHP GC +P. I'm not planning on shooting but 5 (10?) rounds out of it. Recoil will not be insignificant. I know, I won't notice it under stress. But, I will notice how long it takes me for my 2nd shot.....