Gun Smith
Gold $$ Contributor
I have several Brownells Magna Sets, and lots of individual pieces, especially in the smaller sizes. Many times I would use brass shim stock of varying thicknesses to make up the difference in a slightly loose fitting bit. This saved a lot of time fitting bits precisely to screws. A tight fitting cleaning patch also works well in some cases. Foreign shotguns with the super thin screw slots were a real pain.
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