HELP - 40 S&W Load Data Help

ScottyPotty · Post by **ScottyPotty** » Fri Mar 21, 2008 8:58 pm

Im setting up to make up some .40s, but my books dont give me a OAL for the 180gn LRN bullets. Can you guys see if you have a OAL for the 180gn LRN?

thanks

ScottyPotty · Post by **ScottyPotty** » Fri Mar 21, 2008 9:09 pm

It seems I found some Internet stuff @ 1.125 - 1.130

Can anyone verify that?

fisher · Post by **fisher** » Fri Mar 21, 2008 10:09 pm

You will be fine with 1.130. The data I have says that generically 1.135 is the Max OAL.
"Hogden Data Manual, 26th edition."

mauser · Post by **mauser** » Sat Mar 22, 2008 6:57 am

Keep in mind that 180 gr. leads in the .40 are recommended to be kept below 840 fps. Anything higher and they start to "push through" the rifling rather than engaging it. (Source: Hornady).

When you have a lead in a hot round like 40 S&W running slow, the powder will burn dirty and the lube on the bullet will smoke.

I'm not saying don't use them because they can make real cheap practice fodder but keep in mind you are going to be cleaning a lot more often and more thoroughly than you would with jacketed or plated bullets.

weakhand luke · Post by **weakhand luke** » Sat Mar 22, 2008 10:02 am

Probably a good time for the caution re.: shooting lead in a Glock polygonal barrel...

Music Man · Post by **Music Man** » Sat Mar 22, 2008 11:06 am

http://data.hodgdon.com/main_menu.asp

Try this link for winchester & hogdon powder

ScottyPotty · Post by **ScottyPotty** » Sat Mar 22, 2008 12:47 pm

weakhand luke wrote:Probably a good time for the caution re.: shooting lead in a Glock polygonal barrel...

Sorry I couldn't resist

weakhand luke · Post by **weakhand luke** » Sat Mar 22, 2008 3:38 pm

Was that lead, or (un)depleted uranium?

I'd consider that fair warning.

mscott · Post by **mscott** » Tue Apr 01, 2008 6:01 am

Internet rumors suck. My lead 180gr bullets are loaded to about 960 fps. Accuracy seems plenty good, so I don't know what pushing through the rifling would be. 1.13 is fine for oal. Many thousand through Glock barrels. Keep your gun clean and use sensible powders.

Heretic · Post by **Heretic** » Tue Apr 01, 2008 3:11 pm

SAAMI Maximum Overall Length – 1.135 inches. But I would check for reliable feed from the magazine on the firearm that you have by building 10 or 15 rounds to start. I have found that it is occasionally necessary to reduce the length by 10 or 15 thousandths for some ramp/chamber configurations.

Post by **evan price** » Tue Apr 01, 2008 4:27 pm

The ones I loaded were 1.125 and worked fine with lead 180gr TC projectiles IN A GLOCK 22!!!

mauser · Post by **mauser** » Wed Apr 02, 2008 6:53 am

mscott wrote:Internet rumors suck. My lead 180gr bullets are loaded to about 960 fps. Accuracy seems plenty good, so I don't know what pushing through the rifling would be. 1.13 is fine for oal. Many thousand through Glock barrels. Keep your gun clean and use sensible powders.

Glad your combo of gun, bullet and velocity work. The warning about keeping the 180 leads below 850 is not an internet rumor though. It is a warning note that comes in each box of 10MM lead 180's from Hornady. Only bullets I ever saw that had a warning packed within the box.

Tither · Post by **Tither** » Thu Apr 03, 2008 3:07 pm

Yeah I heard about that. There is another problem too. The phenomenon is called Kaboom
http://www.youtube.com/watch?v=Vceh44UK-8I

And sometimes just KB

# Why do kB!s occur in these Glock models?
Reports compiled by Speir from various independent laboratories are inconclusive as to one single cause for the catastrophic failures.

There do, however, appear to be several contributing factors which collectively may induce catastrophic case failures:

* Firing out of battery. Most Glocks will do this to some degree, especially those improperly maintained.
* Significantly overpressure rounds. These occur mostly in homemade reloads or in commercially remanufactured ammunition, but have occurred in factory ammunition as well.

Lack of full case support in the critical area over the feed ramp of all large caliber (.40 S&W, 10mm, .45 ACP) Glock pistols. [See Annotation #5]

Look it up on Google. Kaboom Glock

But I heard it was with all 180 gr bullets.