I have the Manson crowning kit. I cut a fresh crown on all new or used factory rifles I acquire. If a custom rifle has accuracy issues I can't resolve, I'll try a new crown on them. The Manson kit is very accurate.
Bob
I have one of these with the 11 degree target cutter and have been very pleased with it. It cuts a nice crown and has a guide to keep everything concentric to the bore.
IMO well worth the investment.
