Starline 5.56 H20 Capacity

[LVLAaron]

Picked up a bag of Starline 5.56 brass (actual 5.56 headstamp, they say it's the same other than some metallurgical differences from the 223 brass)

Long story short; 30.5 grains of h20, and an outstanding standard deviation.

Screenshot attached.

 

[LVLAaron]

This is the only brass in 223/556 that I have measured. For reference I have measured some 308 brass.

Lapua SRP SD: .16
Alpha SRP SD: .12


Measured LC04 and LC15 batches of brass. Both had an SD of .25

 

[jepp2]

Long story short; 30.5 grains of h20, and an outstanding standard deviation.

Were the measurements taken on new, or fired brass?

 

[LVLAaron]

Were the measurements taken on new, or fired brass?

Fired once.

 

[Dgd6mm]

I like the H20 capacity, I have once fired and will weigh the capacity. I did weigh external weigh and outlines were few, mostly variation was .6 tenths of a grain. 200 cases.

 

[rsmithsr50]

guess it is a personal thing, but 6 tenths in 30 GR CASE IS WAY TOO MUCH for me.
I like 50 cases on plus or minus .1 grain

I like the H20 capacity, I have once fired and will weigh the capacity. I did weigh external weigh and outlines were few, mostly variation was .6 tenths of a grain. 200 cases.

 

[Dgd6mm]

I guess it is.

guess it is a personal thing, but 6 tenths in 30 GR CASE IS WAY TOO MUCH for me.
I like 50 cases on plus or minus .1 grain

Out of 200 cases I could get 50 of plus or minus .1 grain easily.

Don Dunlap

 

[rsmithsr50]

lol
but
would you get 3 or 4, 50 case lots at +/- 0.1 from 200 ?
that is worth buying.

I guess it is.




Out of 200 cases I could get 50 of plus or minus .1 grain easily.

Don Dunlap

 

[Steve Ladino]

Picked up a bag of Starline 5.56 brass (actual 5.56 headstamp, they say it's the same other than some metallurgical differences from the 223 brass)

Long story short; 30.5 grains of h20, and an outstanding standard deviation.

Screenshot attached.

Good information.

 

[Dgd6mm]

lol
but
would you get 3 or 4, 50 case lots at +/- 0.1 from 200 ?
that is worth buying.

For my ar with peep site, yes...lol 50-100-200 yards. If I want more Lapua quality brass, I would have bought more Lapua.

 

[T-shooter]

I found these, don't know where from or how accurate.

 

[Garrett E Booth]

guess it is a personal thing, but 6 tenths in 30 GR CASE IS WAY TOO MUCH for me.
I like 50 cases on plus or minus .1 grain

Don't you mean 0.6gr SD of empty case weight for a 103 gr case? He showed 0.06gr SD for the 30gr case capacity

*I know this is an old thread. But I felt this needed to be pointed out for those considering using this brass in future.*