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 Reloading .40 S&W for Glock 23
kssoftwareman  [Team Member]
10/9/2009 12:38:23 PM EST
I have been reloading .40 S&W for my Glock 23, with only low to medium loads according to my Hornady book. No problems to date but understand that there have been instances of case failures due to the unsupported portion of the .40 case in the G-23 barrel. IE the Glock bulge. My question is does resizing the case take care of this or is there another step needed that I am not aware of?
I use a Hornady Lock N Load progressive with both Hornady and Lee dies.

Your input is greatly appreciated. Don't want to blow up my gun.
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1hdrocks  [Member]
10/9/2009 1:37:37 PM EST
I also shoot reloads in my 23 (and my other Glocks). I hope there is no other step you're missing because I'm missing it too. I clean my cases and load them. I use a 550B with either RCBS or Dillon dies. I've only loaded thousands of 40 and 9 without a problem
SBR7_11  [Team Member]
10/9/2009 1:53:25 PM EST
"Glock bulge".... look at your cases, drop them in a gauge... size them, drop them.... do they drop freely in and out ??

Look at mouth of size die, some dies have large radius or throat into die and do not size case fully.

Best thing to do for 40 S&W in a factory Glock barrel is to stick to moderate loads with 165 & 180gr bullets..

Stay away from fast powders too with 40 S&W.
gaidin43  [Member]
10/9/2009 2:23:23 PM EST
I have been looking to start doing reloads for my 23 for a while now. Where is the best place to start and some of the equipment I will need?
borderpatrol  [Member]
10/9/2009 2:31:51 PM EST
Take this with a grain of salt, I got it off the web. Several posts have indited 200 grain bullets loaded in already Glocked brass as being involved in a higher percentage of KaBooms.

I came across 10,000 once fired cases (for free) so I had to buy a pistol for them. I pick up my Glock 23 next Saturday. Actually, because of the volume of brass involved, I had to buy two .40's. I got the Sig P229 a couple months ago. I've found it nearly impossible to get standard small pistol primers. I only have 1000 on hand, 10,000 on back order.

I have been buying all different types of bullets, 135, 150 and 200 grains. 180's have been the hardest to find because they are the standard load. I probably have enough to load all the brass, or at least 80% of it. I'm going to use Power Pistol because it works, has lower pressure and higher velocities. A whopping good fire ball too! I intend to use starting loads and will be looking for accuracy, not velocity.

EGW (Evolution Gun Works) carries undersized -.001" .40 S&W dies custom made by Lee. These dies are suppose to iron out the problem. Because of the volume of brass, I will probably chuck anything that looks too mangled. I also have Redding's push through die that sizes the complete case, including the base and head. I intend to go slow and not take any chances with obviously stressed cases.

I've reloaded countless rounds since the mid 80's 9mm, .38 Special, .357 Magnum, .45 ACP, .41 Magnum, .223, .30-06, .308, 6.8 SPC, 6.5 Grendel, 6mm WOA, 6mmBR, 6,5X47mm, .30-30 and 8mm Mauser to name a few. All this Glock talk has me nervous for the first time. I understand newer model Glocks have better case head support than the originals, apparantly a step in the right direction. I know they are great pistols and will take all of the normal precautions, I think much of the talk is second hand, heard it so I repeated it, and very rare in the real world. Otherwise people would be blowing up Glocks left and right.

I always use the disassembled barrel as my gauge for semi-auto pistols. If it won't fit that gauge it won't get fired.
GWhis  [Member]
10/9/2009 6:54:21 PM EST
Originally Posted By 1hdrocks:
I also shoot reloads in my 23 (and my other Glocks). I hope there is no other step you're missing because I'm missing it too. I clean my cases and load them. I use a 550B with either RCBS or Dillon dies. I've only loaded thousands of 40 and 9 without a problem


Gee, the new Redding Push-Thru Die is only $32.50. I realize that that would add a step to your reloading, but....

If you dance with the Devil long enough, you'll eventually get burned.
kssoftwareman  [Team Member]
10/10/2009 5:33:12 AM EST
Thanks for all the input. Yes I have been getting a little more nervous about the Glock bulge as well. I am going to but the Redding die and take no chances. A $35 die is a whole lot cheaper that a blown-up $600 gun.

I appreciate the feedback. Y'all be careful out there.
kssoftwareman  [Team Member]
10/11/2009 1:00:45 PM EST
FYI just ordered the Redding push-thru die from Midway. Should be here later this week. Will post how well it works getting rid of the dreaded Glock bulge. Thanks for the input guys!
ViniVidivici  [Team Member]
10/11/2009 1:52:52 PM EST
I've put thousands of my own reloads through my G23 with no problems whatsoever.

I just resize like I would any other caliber. My RCBS Carbide dies do the trick just fine, never had a problem getting them fully resized.

If you're not getting that bulge out all the way with the dies you're using, the EGW-U die is the way to go, from what I've read from others here and elsewhere.

Nothing extra or special that needs to be done. Just get them fully resized, that's it. Stay safe, adhere to known load data, work up carefully, all that.

Because .40 "is what it is", you know, I've only loaded hot stuff in brand new brass.
eweloader  [Member]
10/11/2009 3:29:56 PM EST
Originally Posted By kssoftwareman:
Don't want to blow up my gun.


Then don't over charge your hand loads.
I have loaded thousands of .40 for my G35 and Sig P226 with no problems whatsoever. The generous chamber of the Glock, which contributes to "Glock bulge", is there to enhance reliability. Glocks were designed to go bang (not Kaboom) every trigger pull, which they do.
84-420  [Member]
10/27/2009 3:48:56 PM EST
Is bullseye considered a fast powder? I don't have any data in front of me, but I load ~ 5grs with a 180 fmj and it has worked so far.
SBR7_11  [Team Member]
10/27/2009 4:07:37 PM EST
Originally Posted By 84-420:
Is bullseye considered a fast powder?


Ummmm,,,,, Yes, right there at the top of the list.

dryflash3  [Team Member]
10/27/2009 4:24:09 PM EST
Bullseye is one of the fastest powders.
EWP  [Member]
10/27/2009 5:33:17 PM EST
Originally Posted By eweloader:
Originally Posted By kssoftwareman:
Don't want to blow up my gun.


Then don't over charge your hand loads.
I have loaded thousands of .40 for my G35 and Sig P226 with no problems whatsoever. The generous chamber of the Glock, which contributes to "Glock bulge", is there to enhance reliability. Glock's were designed to go bang (not Kaboom) every trigger pull, which they do.


The Glock doesnt have a "generous" chamber, it has an unsupported section of the chamber that results in the bulge.

I reload bunches of Glock fired .40 brass in Lee and Hornady dies and the bulge always comes right out and fits my Dillon case gauge like a new piece of brass but I don't shoot any of it in a Glock, I like my SA XD40 much better than the Glock and the brass is nice and straight when it comes out after firing.

I load 4gr of Tite Group with Rainer 180gr RNFP TM J's, this is .2gr under the starting load but shoots very well and is plenty hot for my use.
borderpatrol  [Member]
10/27/2009 5:36:25 PM EST
I've run about 200 reloads through my Glock 23 so far. Very accurate and 100% reliable out of the box. I made some educated guestimations and ended uo very very close to my goals. I ran every case through Redding's G-Rx die, used CCI-500 std. small pistol primers, OAL for both loads was set at 1.125" and all Federal once fired brass.

200grain Hornady FMJ
5.5 grains of Power Pistol
860 fps with a S.D. of 9


135 grain Sierra HP
8.2 grains of Power Pistol
1194 fps with a S.D. of 17


Good accuracy and "energetic" cycling. Recoil was quite moderate considering the bullet weight in the slow heavy pill load and the velocity of the light bullet load. I may play around later, but both of these are going to be "the load" for the first 1000 primers. OH, I used Redding's Pro die set in my Dillon 550-B with a light taper crimp. I was unable to push a bullet deeper in the case no matter how hard I tried. I'm older now and didn't want to hurt myself in the process. Simply pushing them against my wooden reloading bench top they would not budge.
Keith_J  [Team Member]
10/27/2009 5:51:33 PM EST
The problem isn't the resizing, it is the brass itself. Only the mouths of the case are annealed, the head is over 3/4 hard along with a lot of the web. It doesn't take too many trips though the chamber to weaken the web.

I would recommend staying under 22,000 PSI and you should be safe.
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