Hello long range hunters! I need some advice about the crown on my new rifle and would welcome any input you may wish to offer. To make a short story long... This is a Browning BAR Longtrac in 300 Win Mag that I got a few months ago. The gun has had less than 50 rounds fired through it - just enough to break it in, sight in the scope, and go on a quick hog hunt. When I gave it it's first good cleaning, I noticed that there is a small nick right on the edge of the crown which you can see in the photo below. (Please ignore all the lint.) Anyway, I haven't had time to do anything about this since I put the gun away after its maiden voyage, and now it's time to start thinking about the upcoming season... So, would you rework the crown on this barrel? If so, what are your thoughts on using a Brownells 45 degree chamfering cutter to chamfer the edge of the bore just enough to take out the nick? The cutter has a caliber specific brass pilot to maintain concentricity to the bore and looks like it should do the job without having to send the gun to a gunsmith for a spin on the lathe. Has anyone used one of these? What was your experience? Is this a good DIY solution, or is it likely to do more harm than good? I appreciate any input and thanks in advance!