Various Handgun Brass Facts


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BlindJustice
October 9, 2007, 03:45 PM
I looked at Starline Brass Product Information and the descriptions
of their product I thought might be shared here for
some of the more popular cartridges in order to
clear up and curb the spread of mis-information.

Of course this is just valid for Starline and other
manufacturer's of brass cases can be different.


Standard Popular cases such as .38 SPecial, .44 Special, .45 Colt, .357
Magnum, .44 Magnum, 9MM, .45 ACP etc. are not listed but the
rarer from almost obsolete to the newest are listed. Here's a sample:
( my comments are in Parens )

45 Auto Rim Here is a new source for the Auto Rim case. It is built with the same integrity as our 45 Colt case.
( SAAMI = 14,000 imho this is nuts it has a Thicker Rim at approx. 0.0755,
in comparison to the .45 Colt at 0.0455 inch in order to occupy the same
distance that the moon clips place a .45 ACP cartridge utilizing moon clips
in a revolve that fires ACP & ACP +P )

400 Cor-bon case is a 45 Auto+P based case necked down to 40 caliber. The primer pocket was changed from large pistol primer to small pistol/rifle primer in 12/00. Test results concluded no adverse affect from switching to small primer pocket. Cor-Bon is now recommending Win. small pistol works best and if using small rifle Remington 7 1/2 works the best.
(SAAMI = N/A but estimated at 26,500 but why the change to small pistol primer? Might be good to know if a reloader tried to form his
own .400 Cor-Bon cases from a .45 ACP case )

9MM+P has no difference from the standard 9mm Luger other than headstamp designation for load segregation. Due to standard case design, will handle +P pressures with no problems.

45 Auto+P is a strengthened version of the 45 Auto with the same external dimensions. A thicker web and heavier sidewall at base strengthens the case in potentially unsupported areas. This case has approximately 2 grains less internal capacity than the standard 45 Auto.
( SAAMI = 24,000 psi - .45 ACP 21,000 )

45 GAP This 45 based case is designed for the 45 Glock Auto Pistol just recently released. Cases available 04/09/04.
( Loaded to +P in order to match .45 ACP velocities )

45 Super* is the same externally as the 45 Auto, but has a thicker web, denser grain structure in the metal and special heat process which enhances the durability of the case. Similar internal capacity as the 45 Auto. 45 Super load data is available through ACE Custom 45's at (281) 659-1017. *Loads to be shot ONLY in guns modified professionally to handle extreme pressures. DO NOT SHOOT IN STANDARD 45 AUTO!

( SAAMI = 28,000 psi )

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