Bigmatt91783
Member
i would like to know what pressure for case failure on glock 23 40sw don't know what load to go with don't want to blow my glock up.
Reloading Question
- Thread starter Bigmatt91783
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35,000 PSI is max for the 40 S&W, so if you stay within the published load data, you'll be fine
I load for my G23, and it shoots 165gr win fmj fp, in one hole using 6.4gr Power Pistol (960fps) its below starting data, but burns clean, & cycles the action plenty good
I load for my G23, and it shoots 165gr win fmj fp, in one hole using 6.4gr Power Pistol (960fps) its below starting data, but burns clean, & cycles the action plenty good
KB's in Glock .40's are generally caused by case failure in the unsupported section of the chamber. With reloads this is usually from cases that have been stretched or bulged excessively. Take care and examine each case before reloading.
The .40 is a high pressure round, as high a pressure as any of the magnum's. Compare load data from several sources and keep the loads to the more moderate levels listed. Use jacketed bullets in the Glock factory barrel as leading accumulates quickly and is difficult to see in polygonal barrels.
If you want to use lead bullets get an after market barrel with conventional land and groove rifling. A better supported after market barrel would also reduce danger of case failure.
The .40 is a high pressure round, as high a pressure as any of the magnum's. Compare load data from several sources and keep the loads to the more moderate levels listed. Use jacketed bullets in the Glock factory barrel as leading accumulates quickly and is difficult to see in polygonal barrels.
If you want to use lead bullets get an after market barrel with conventional land and groove rifling. A better supported after market barrel would also reduce danger of case failure.
Shoney
Member
Steve C:
I dare you to post your repeat of that old urban myth over on Glock Talk!!!!!!
The continuing urban myth of “cant shoot lead in a polygonal barrel”, started with kabooms in Glocks, because of their unsupported barrels and lack of frequent scrubbing. Glock’s research showed a build up of lead at the point of head-spacing caused the cartridges to be progressively set farther back in the chamber as more rounds were fired, and the design of the older Glocks allowed them to still fire (fire out of battery). The leading of the chamber was due to soft lead in combination with the increased pressure of the unhardened lead being deposited in the barrel, and the increased pressure and out of battery firing causes the case to rupture. I am unaware of this happening in newer Glocks and Glocks with supported chambers.
I dare you to post your repeat of that old urban myth over on Glock Talk!!!!!!
The continuing urban myth of “cant shoot lead in a polygonal barrel”, started with kabooms in Glocks, because of their unsupported barrels and lack of frequent scrubbing. Glock’s research showed a build up of lead at the point of head-spacing caused the cartridges to be progressively set farther back in the chamber as more rounds were fired, and the design of the older Glocks allowed them to still fire (fire out of battery). The leading of the chamber was due to soft lead in combination with the increased pressure of the unhardened lead being deposited in the barrel, and the increased pressure and out of battery firing causes the case to rupture. I am unaware of this happening in newer Glocks and Glocks with supported chambers.
Steve C said:
I had one of these babies happen in my Beretta 92FS; it didn't do any damage but I felt the release of pressure out though the trigger assembly. This is definitely something I wouldn't want to experience in polymer gun like my H&K USP or a Glock because I don't know what would happen.
Ever since this happened I purchased case gauges for all my pistols and if the resized brass doesn't pass it goes into the reclaim barrel. To be honest I have reloading for over 30 years and this was the first failure I had ever seen or experienced. Live and learn.
Bigmatt91783
Member
thanks for all the help guys
rcmodel
Member in memoriam
There you go right there!!!!
My old 23 will fire out of battery by way more then I would like.
But I have shot hard-cast lead reloads in it for going on 12 years now without a problem.
I could clearly see an out-of-battery KABOOM happening if you let a dirty chamber shoulder get ahead of you.
rcmodel
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