9mm case capacity by Head Stamp

[zzt]

A while ago I saw a post here (or elsewhere) listing the case capacity of different 9mm cases.  I remember Blazer was the lowest.  The RP that I use was 3rd or 4th down.  I don't remember which HSs were the largest.  I'm trying to minimize powder spillage when the shell plate turns.

 

Can anyone point me in the right direction?

[Sarge]

5 minutes ago, zzt said:

A while ago I saw a post here (or elsewhere) listing the case capacity of different 9mm cases.  I remember Blazer was the lowest.  The RP that I use was 3rd or 4th down.  I don't remember which HSs were the largest.  I'm trying to minimize powder spillage when the shell plate turns.

 

Can anyone point me in the right direction?

Have you tried all the tricks and gizmo’s to reduce the shell plate snap? You load on a 650? 

[zzt]

1 hour ago, Sarge said:

Have you tried all the tricks and gizmo’s to reduce the shell plate snap? You load on a 650? 

 

I load on a Hornady LnL AP.    The plate indexes in half steps, so it is not as bad as on a 650.  The only way to reduce the snap is to lower the ball detent.  I have done that.  Any more and the plate will not index properly.

[Sarge]

1 hour ago, zzt said:

 

I load on a Hornady LnL AP.    The plate indexes in half steps, so it is not as bad as on a 650.  The only way to reduce the snap is to lower the ball detent.  I have done that.  Any more and the plate will not index properly.

Gotcha.

[CClassForLife]

I'll do some testing tonight. I have a dozen or so different headstamps. Probably gonna limit to a sample size of less than 5 of each, but it should be good enough for some patterns to emerge.

[zzt]

Thanks.

[Farmer]

So far I’ve found that Hornady has the least amount of internal taper and the greatest volume. I used Enforcer to check how much they held after sizing,

Horn-13.8

FC91- 13.4

Speer-13.0

Fed-13.5

CCI-12.8

YMMV. 

 

Edited August 2, 2022 by Farmer
Added

[CClassForLife]

@zzt

 

• Fully processed brass, no flaring
• CCI 550 Primer
• Franklin Armory DS-750 powder scale
• Titegroup Powder, scooped into casing, excess scraped off the top with flat edge, no packing
• 1-3 samples of each headstamp
• Max STDEV of 0.4

AMMO INC	11.8
HPR	11.6
BLAZER	11.6
FC	11.5
MXT	11.4
HRTRS	11.4
HOTSHOT	11.4
GFL	11.4
WIN	11.3
MEN	11.3
Browning	11.3
AP	11.3
S&B	11.3
PERFECTA	11.3
WMA	11.2
WCC+P	11.2
SIG	11.2
CBC	11.2
MFS	11.2
A USA	11.2
* USA *	11.1
STV	11.0
WCC	11.0
RP	10.9
NT I/\I	10.9
AGUILA	10.9
F&S	10.6
X-TREME	10.5

[zombywoof]

I pulled this off the site some time ago. Internal case taper of 9mm headstamp.

[zzt]

@CClassForLife  Thanks.  A huge help.

[dtuns]

19 hours ago, zzt said:

 

I load on a Hornady LnL AP.    The plate indexes in half steps, so it is not as bad as on a 650.  The only way to reduce the snap is to lower the ball detent.  I have done that.  Any more and the plate will not index properly.

There was a post here somewhere using and o ring around shell plate instead of the spring. I did it and it helps a lot. I'll look around its a Mc master carr P/N

[dtuns]

Just now, dtuns said:

There was a post here somewhere using and o ring around shell plate instead of the spring. I did it and it helps a lot. I'll look around its a Mc master carr P/N

Here it is

Oil-Resistant Buna-N O-Ring 2.5 mm Wide, 69 mm ID 9262K939

[dtuns]

Just now, dtuns said:

Here it is

Oil-Resistant Buna-N O-Ring 2.5 mm Wide, 69 mm ID 9262K939

before you install put a light coat of Lano lube on it worrks great.

[zzt]

@dtuns  Thanks.  Ordered.

Edited August 3, 2022 by zzt

[Tunachaser]

Also careful adjustment of the pawls can eliminate the snap.  It is tedious but worth it to me.

[sandflea316]

On 8/2/2022 at 1:36 PM, zzt said:

 

I load on a Hornady LnL AP.    The plate indexes in half steps, so it is not as bad as on a 650.  The only way to reduce the snap is to lower the ball detent.  I have done that.  Any more and the plate will not index properly.

I use an oring greased with lanolin instead of the supplied spring oring on my shell plate.  The greased oring minimize the jerky motion

Loading 9mm major with 7.2 WAC.