300RUM neck diameter?

A

alinwa

oft dis'd member
Could some of you tell me the measurements of your loaded rounds (Factory and/or Reloads) over the bullet?

I'm designing a reamer and wanting to NOT have to go buy 300.00 worth of cases just to see what Rem/Nos/Horn/Norma/Pet etc cases actually measure at the neck.

I'm looking for measurements on un-turned, tight-out-the-box brass........ no turned necks please.
 
alinwa said:
Could some of you tell me the measurements of your loaded rounds (Factory and/or Reloads) over the bullet?

I'm designing a reamer and wanting to NOT have to go buy 300.00 worth of cases just to see what Rem/Nos/Horn/Norma/Pet etc cases actually measure at the neck.

I'm looking for measurements on un-turned, tight-out-the-box brass........ no turned necks please.
Click to expand...

Just have a round handy. It is new unfired Nosler brass with a seated bullet. With my Mitutoyo micrometer, it measures .3383
 
I have Rem, Peterson and nosler at home to get you a measurement. Just to clarify, what measurements do you want?
 
alinwa said:
Could some of you tell me the measurements of your loaded rounds (Factory and/or Reloads) over the bullet?

I'm designing a reamer and wanting to NOT have to go buy 300.00 worth of cases just to see what Rem/Nos/Horn/Norma/Pet etc cases actually measure at the neck.

I'm looking for measurements on un-turned, tight-out-the-box brass........ no turned necks please.
Click to expand...

alinwa,
Remington factory neck o/d's measure .3372" w/ seated coreloks & swifts.
 
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