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case gauge & .45 200 gr. rnfp


b2bubba

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I've started reloading Blue Bullets in .45 acp 200gr. rnfp.

4.6 gr. 700x

c.o.l. 1.175

About 2 - 3 per 100 won't drop fully into the case gauge but fit nicely in the chamber.

After closer inspection the case it self is a little short. .84 - .86 spec is .898

This is just range brass that has been tumbled not trimmed.

I have cleaned the case gauge so I'm wondering what's going on?

I would appreciate any ideas. Thanks

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As long as they chamber in you barrel without a problem I would not worry about it too much. Did you notice if the short cases are always to blame? If so they are not going as far into the taper crimp as the longer cases and this may be just enough so that they won't easily chamber in your case gauge. You might run them through the taper crimp again and check to see if that fixes the problem. I use my barrel as a case gauge personally since that is what the round needs to run in.

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Yes, the short cases seem to be the culprit.

The loaded case is .470 at the mouth.

After looking closer the head just above the rim is .480 - .481

The ones that fit the case gauge are in the .473 - .475 range

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