Ill just say you know how it is at the local gun shop when opinions start flyin
And you know what opinions are like....
I had used them for my .243 and can not say that I have ever had a problem with them. They expand like advertised and, although expensive for use as a paper puncher, seemed to stop the deer and coyotes.
I do not think I had any more or less trouble cleaning my rifle afterwards. If I happen across a good deal on them again, I will use them.
Also consider, if they were really that bad, why is the gun store still selling them and why haven't we heard more chatter about how bad they are?