Brain356
I only have the one sample, with was fired in an AR rifle.
I have to wait a while,
I have a shooter who buys everything new that hits the market,
in the AR type of rifles,
I know he will have one shortly,
he will hit the range and shoot up several boxes of brass,
and leaves the brass lay, (he don't reload),
I'll be there to to police the brass,
then I can give a better results of the fired brass.
From the sample I have,
there seems to be a fairly tight chamber,
as there is very little expansion just above the web area,
primer is normal appearing, there is a ejector mark,
and the line from bolt face extractor area,
consistent with the AR type bolts.
The diameter of the base, below the web expansion area,
just above the extractor groove measures measures .416.4",
across the web expansion area measures .418.5"
case neck thickness is .012/.013" (4 places checked)
length measures 1.475".
A better sample could provide better results for dimensions,
of non fired and fired cases,
once I get my hands on some cases, I'll post the info here.
The only thing I can think of,
is the difference between the spec's from SAAMI,
and actual dimensions of OEM produced brass,
I know SAAMI/Nosler shows .420" in the base diameter etc.
I am hoping that as other shooters start using this case,
is that they will provide more spec's etc.
I just rechecked the weights again,
and came up with the same spec's for this 1 case.
HTH,
Tia,
Don