I once loaded some 300 gr. plated bullets for a friend's Dan Wesson .445 Supermag. These bullets didn't even have a crimping groove and they were loaded near maximum velocity. We never had any issues to report. I think it's always better to have a crimping groove but with plated bullets you still have to be careful so you don't cut through the plating with the roll crimp. But if I am going to pay for bullets I'd buy cast.

Dave Sinko