Those are a great tool to learn with.I was able to determine that I had a bad die years ago by having a concentricity gauge.It was a redding and they sent me a new one asap.
I like to check new brass both before and after sizing,,not all the time mind you but every once in awhile to check my die setup and technique.I use forster coax presses and they are
nice for making ammo with low runout.
As for you question..001-003 as always been acceptable to me for my hunting guns.If you seperate the brass at the range and check em later for runout it can be enlightening.I mean keep track of any flyer brass.I shoot almost no paper so I don't get that chance.
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