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You have much to learn Padawan :P

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TeRei, it depends on what brand of dies you are using. Some FL dies without an expander would squeeze the neck down so much that the case becomes useless.

I'll repeat my mantra : MEASURE.

The...

True shoulder bump sizing as it is used in benchrest and target reloading does not use a FL die (unless the neck portion has been reamed out, making it a body die).

What you are describing above...

Size, fire, size, fire, size, fire...

Think of it this way:

If you measure the case and the shoulder datum is correct, but the case wont chamber, then something else is out of spec, right ?...

Ok, so here is an experiment for you.

Get a shoulder bump / body die that is correctly set up. After firing, size your case, but DO NOT trim it. Keep doing this for several iterations. At some...

Add to this that when you start using expander buttons in sizing dies things get even more complex.

I don't like expanders at all. For shoulder bumping I either buy body dies, or make them by...

All of these issues can be identified and correct by doing the appropriate measurement.



I don't really agree with this BW. The case may well have been sized correctly, but during that process,...