If you are going to crimp, use the Lee Factory Crimp Die. It will put a nice crimp on any bullet with or without a cannelure(groove). The Lee Factory Crimp Die can and does Increase accuracy not decrease it. Here is some interesting reading.
http://www.accuratereloading.com/crimping.html
http://www.leeprecision.com/cgi/cata...ies-crimp.html
http://www.midwayusa.com/eproductpag...eitemid=586092