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caliper vs micrometer

5477 Views 30 Replies 10 Participants Last post by  msredneck
I have a dial caliper that I use to measure OAL on my reloads.

Sometimes it seems that a micrometer would be handly when I want to measure bullet diameter or maybe the case mouth diameter when I 'm setting the case mouth expander die....yet the dial caliper will sorta do this as well...I guess its a matter of accuracy.

Which brings up another subject...what do you use to "calibrate" your calipers with guess a gauge block is in order here.


Guess there is no end to the "toys" a reloader must have!
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Nice rotary table your standing on :thumbup: or is that just a bed with t slots? Lots of travel in that one. It is so big I cant even tell for certain what it is. Since there is a lot of swarf on the floor I am guessing huge mill? Are you putting a cut on that top part? If so it looks like a nice surface finish.
LOL I would hate to load for that revolver.

Back on topic about the only mic you need for reloading would be a ball mic for measuring neck thickness. If you do not turn necks there isn't much need. The way I play with some of these cases and chambers it is pretty important to know the thickness of the brass around the neck. On SAAMI chambers you do not have to worry too much about creating a high pressure neck tension situation unless you do not trim your brass.
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