10mm-Auto

General => Range reports => Topic started by: sqlbullet on September 24 2025 07:10:51 AM MDT

Title: Load Test Sept. 20, 2025 - 38 Super/9X23
Post by: sqlbullet on September 24 2025 07:10:51 AM MDT
***This is not load data - Use at your own risk ***

Starline 38 Auto-Comp brass, S&B Small Rifle Primers, Fusion Freedom Gold 1911 chambered 38 Super.

38 Super Auto +P Loads

PowderBulletWeightCOALChargeExp VelocityExp EnergyGRT PressureGRT VelocityActual VelocityActual Energy
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
AA7Speer HP901.175"10.514404142038613621511.4456
AA7Speer HP901.175"11.517175892662615041606.2515
SilhouetteFederal HST1241.275"6.514085462824012281147.6363
SilhouetteFederal HST1241.275"7.515296443848513601301.2466
AA7Federal HST1241.275"10.514505793631214281420.4555
AA7Federal HST1241.275"10.514505793631214281417.8553
AA7Federal HST1241.275"10.815006193967514701470.8596

9X23 Level Loads

PowderBulletWeightCOALChargeExp VelocityExp EnergyGRT PressureGRT VelocityActual VelocityActual Energy
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
SilhouetteNOE 360-1281301.145"6.514005663964012771262.6460
SilhouetteNOE 360-1281301.145"714756284808613531323505

Each row is a five shot test.  GRT data was added after I shot these not before.  I have had them loaded for several weeks.

You may notice that there are only nine rows and wonder why I loaded only 45 shots.  I loaded 50, but redacted the 152 grain test.  I neglected taking my seating depth into account with those loads.  The source data was for a 147 grain XTP seated to a COAL of 1.260.  My load was seated 1.165. 

GRT says my pressure was nearly 70K PSI. The case heads were expanded an additional 0.001", no buldges.  I had two pierced (small rifle) primers which was my only pressure sign.  I think this illustrates very well the risks of using "pressure signs" to determine safe pressure. They are really subtle until they aren't. Velocity was 1300 fps for a 152 grain SWC - Pretty solid for a 5" 1911.  The shots were not remarkable either.

I am really enjoying the fast nines.  I plan to push the Federal HST's further into the 9X23 territory next with Silhouette and AA7.
Title: Re: Load Test Sept. 20, 2025 - 38 Super/9X23
Post by: The_Shadow on September 24 2025 01:05:09 PM MDT
The 6" 9mm conversion barrel I have for my Glock 20SF might be better off chambered for 38 SUPER.
Back when I started loading the 9x25 Dillon I picked up the ZERO 0.356" 121 grain JHP from ROSE Dist. as they were originally for the 38 SUPER.  They are just a copper cup/lead core design.

(https://i.postimg.cc/dQhpgwz5/IMG-0150.jpg) (https://postimg.cc/PNkSwsfD)

This one was from the S&W1006 5" BBL in the 4th jug of water.
Power Pistol 10.2 gr CCI 350 Velocity 1592-1620 fps
(https://i.postimg.cc/NGk4fDSV/IMG-0331.jpg) (https://postimg.cc/pyy8sf2Y)

https://www.rozedist.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=RZD&Category_Code=ZJB (https://www.rozedist.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=RZD&Category_Code=ZJB)
Title: Re: Load Test Sept. 20, 2025 - 38 Super/9X23
Post by: sqlbullet on September 25 2025 08:09:27 AM MDT
What magazines do you use for 9mm in a Glock 20?  I have been contemplating a 38 Super Glock, but wasn't sure what I would do for mags.  Do standard Glock 20 mags work?
Title: Re: Load Test Sept. 20, 2025 - 38 Super/9X23
Post by: The_Shadow on September 25 2025 12:52:05 PM MDT
The 9mm cartridges fit the standard G-20 mags OK!  It sometimes doesn't feed reliably more because the recoil rod and spring (if I recall was 9lbs maybe 11lbs) kit for the 9mm conversion. 
Postimage is acting up at the moment so couldn't add pics