This video shows the process pretty clearly. I don't buy high end brass for my purposes since I don't compete, so at times my deburring tool can take off a lot of burr material... if you look closely, you can see the cutter gives you a nice tapered internal flash hole for an even flame path. I've always thought this was pretty important for consistent ignition, especially with fast powders or large cases with a large charge of slower burning powder...

My deburring tool is an older model of the Sinclair tool, but works the same and adjusts the same as the one shown in the video


Last edited by Sheister; 11/01/21.

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