Diameter rule

What is the diameter rule??? I read a post that member Manley stated something about the
diameter rule???

What was it in relation to?

Seating depth?

The only thing I can think of is a starting load for BP RB loads. Whatever the diameter of the bore, that's your starting load, so lets say you have a .50 cal ML, you start out with 50 gr of BP, and so on. Or, multiplying a diameter by PI, (3.1416) will give you the circumference of a circle.

Regarding boolits, maybe the rule of thumb where we often hear and say the boolits should be sized to be .001" over the slugged diameter of the firearm barrel.

Then there is the one about shot guns and "square loads" and all of that.

prs

The diameter rule that you can only beat your wife with a switch that is less than the diameter of your thumb? I think the shoe would be on the other foot if I tried that with SWMBO.

More usefully as Dromia suggests there is a rule that a bullet should be seated a minimum of one calibre diameter into the case neck.

Quote:

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Originally Posted by sthwestvictoria

The diameter rule that you can only beat your wife with a switch that is less than the diameter of your thumb? I think the shoe would be on the other foot if I tried that with SWMBO.

More usefully as Dromia suggests there is a rule that a bullet should be seated a minimum of one calibre diameter into the case neck.

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I think the rule is her thumb not your thumb :razz:

Tim

I think he may have meant the one-two thou over groove diameter.
it's something else I ignore.

Rools, we don't need no stink'n rools.........

prs

It would seem there are few 'RULES', but any number of 'SUGGESTIONS'.:not listening:

Quote:

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Originally Posted by runfiverun

I think he may have meant the one-two thou over groove diameter.
it's something else I ignore.

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I think runfiverun has it ..... .002" over JMHO

You really need to let the gun tell what diameter it wants!!

Case neck length is my guess. Needs to be one diameter in length from shoulder to mouth on bottleneck cases.

The diameter rule, bigger is better... In calibers you dirty old men!

Quote:

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Originally Posted by Moonie

The diameter rule, bigger is better... In calibers you dirty old men!

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I do size mine BIG!:bigsmyl2:

Diameter rule=
A cloth tape measuring device for measuring the D.B.H. (diameter at breast height) of trees.
Used primarily in Silva culture work.


:redneck:

Pepe Ray

I thought it was a device where you I put the diameter and it gave you the size of each piece of Pi......

C over pie

We have covered the diameter rule to the Nth degree?

This is a very informative thread. I now know the 'diameter rule' always refers to pie:
http://3.bp.blogspot.com/-L0EHsYDLzi...t-eaten-7.jpeg