I have a 610 (and probably some other revolvers) that I would like to have the chambers chamfered lightly for quicker reloads. Does Brownells make a tool for this? Do most professional smiths just use a Dremel and their highly honed skills? The online sources I have seen "only" want $25-35 for it so I can't imagine their are too many expert tricks to do it. IF I decide to give it a go myself, what are the stumbling blocks for this operation.