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Old 08-02-2012, 05:33 PM   #11
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I understand what you are saying on the max load thing. In my Hornady book it shows loads for up to I think 6.1gn (I'm at work now and don't have it handy) also my Lee info showed 5.6 to a somewhat middle ground load. So why is there so much difference in info and who do I go by? I could see there being a couple grain difference between sources, but these are pretty big swings. If it means anything, when I shot them the loads did not have as much felt recoil as many of the factory rounds I shoot (I understand bullet weight and other factors come into play here). Trust me, I am all for being safe, I only loaded 50 rounds as my first batch, so if I have to toss these, it's not a big deal.

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Old 08-02-2012, 07:02 PM   #12
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JD1969,

I personally don't think that 5.6 grs of 231/HP38 is a MAX loading. Yes they are stiff, but no stiffer than many factory rounds. Maybe I should look at some of the new loading data, naw, what has worked for 35 or more years and works now, doesn't need to be changed now.

Try a couple and if you have no pressure signs and they do what you want, don't scrap the rounds you have.
Or, load up some with graduatingly heavier charges and test them.

Don't forget that there is component variations from lot to lot. Changing brands and types of primers does make it difficult to compare primers. Some lots of bullets may be larger/softer/heavier or the reverse, so take that into consideration too.

It's a 45ACP, the wimpest loading is better than those little bullet rounds, so yours don't have to set the air on fire. Just be safe.

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Old 08-02-2012, 07:42 PM   #13
1911 .45ACP. . then there are others.
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Given your results on the "drop the cartridge into the barrel to check head space" test,
I would back up and try a decapped, sized and empty cartridge, do not bell the mouth.

Since the case is slightly tapered, it is possible that incomplete sizing could cause the "tight" problem.
If a decapped, sized, but empty cartridge doesn't pass muster with the adjacent head space illustration, check that the sizer die is installed and adjusted per the mfg recommendation.

I would also use a micrometer and check the sized dimensions.


If the sized cases are doing fine, then tackle the belling and taper crimp. Don't over bell, a bullet should just kinda hang in there on a horizontal hold, but not really enter the case, just held by the mouth.

An over belled mouth can allow additional metal to be oversized, contributing to a taper crimp missing or springing back slightly, especially if the taper crimp is not adjusted sufficiently.

Assumptions: Dies, Chamber and other non component dimensions are correct.

cartridge-dimensions.jpg   cartridge-dimensions-us.jpg  
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Old 08-02-2012, 08:53 PM   #14
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KG7IL,

Your description of the .45 ACP is confusing.
I'm an old fart and don't do meters, so the numbers look strange, almost as strange as the drawing. But I did some calculations and the numbers a close enough.
However, not trusting my rememberer, I check several sources and none of them show the .45 ACP as having a tapered case. The 9MM and .30 Carbine, yes, but not the .45 ACP.

What is your source for the .45 being a tapered caseing?

Hatcher's Notebook, NRA Handloader's Guide and four other loading books do not display any taper to the caseing.

I don't want to be pickie, just am I missing something?

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Old 08-02-2012, 10:34 PM   #15
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Reduce your OAL till the round fits into the barrel. Make sure your crimp is .469-.471.

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Old 08-02-2012, 10:43 PM   #16
1911 .45ACP. . then there are others.
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OldPapps.
The Diameter is slightly less at the case mouth than near the base.
Nominally a straight wall, actually the max provide for a slight taper.

Sorry about any confusion. (I added a US dimensioned illustration to the orginal post).

My source is a micrometer verifiying specifications from mulitple sources.

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Old 08-05-2012, 05:43 AM   #17
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Wanted to post a follow up. I seated the bullet deeper, 1.22 and they fired fine, no issues. Thanks for the help everyone.;

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Old 08-05-2012, 12:56 PM   #18
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Quote:
Originally Posted by steve4102 View Post
I just checked out Hodgdon's data for HP-38/231.

First, you are at MAX with 5.6gr. One should never start out with a new load with a Max charge of powder. This violates the Number one rule of safe handloading, Start Low and Work Up.

Second, Hodgdon's OAL for the 200gr LSWC is 1.225 inches.
Starting load weight is 4.4 gr.
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Old 08-06-2012, 04:20 PM   #19
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Quote:
Originally Posted by oldpapps View Post
KG7IL,

Your description of the .45 ACP is confusing.
I'm an old fart and don't do meters, so the numbers look strange, almost as strange as the drawing. But I did some calculations and the numbers a close enough.
However, not trusting my rememberer, I check several sources and none of them show the .45 ACP as having a tapered case. The 9MM and .30 Carbine, yes, but not the .45 ACP.

What is your source for the .45 being a tapered caseing?

Hatcher's Notebook, NRA Handloader's Guide and four other loading books do not display any taper to the caseing.

I don't want to be pickie, just am I missing something?
The .45 ACP appears to be a straight case, when it has a roughly 1% taper. John Moses Browning designed it that way so it must be good.
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Old 08-06-2012, 04:55 PM   #20
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I went to SAAMI ( http://www.saami.org/ ) and looked.

This old fart learned something new. Not much taper there, but it is!

Thanks of enlightening me.

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