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Ammo and Reloading Factory Ammunition, Reloading, Components, Load Data and more.

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  #1  
Old 11-03-2019, 12:21 AM
newbie1234 newbie1234 is offline
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Default What I did wrong ?

As you can see the burn on the shell, here the reload data.
On the left
- Bullet: .45ACP, copper coated bullet, 200gr, 0.452", RN.
- Powder: Titegroup, book said 4.7-5.2 gr, I reload 4.7 gr.
- OAL: book said 1.155"-1.275", I crimp at 1.250"
- Primer : Large pistol primer CCI

On the right
- Bullet: .44SPL, copper coated bullet, 200gr, 0.429", RNFP.
- Powder: Titegroup, book said: 5.0-5.4 gr, I reload 5.0 gr.
- OAL: book said 1.460"-1.615", I crimp at 1.475"
- Primer : Large pistol primer CCI

The shells get burn mark just one side only (NOT around the shell), as you can see on the picture, what I did wrong ?


Last edited by newbie1234; 11-03-2019 at 12:24 AM..
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  #2  
Old 11-03-2019, 12:43 AM
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Under-powered loads will not seal and thus leak carbon/smoke back past the case mouth.

I think you got into guns before understanding how they work.
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Old 11-03-2019, 12:53 AM
newbie1234 newbie1234 is offline
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Quote:
Originally Posted by TKM View Post
Under-powered loads will not seal and thus leak carbon/smoke back past the case mouth.

I think you got into guns before understanding how they work.
Exactly, shooting for 40 years and just reload for 4 months .
So how to fix it ? more powder ? I was reloaded with minimum powder.
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Old 11-03-2019, 1:02 AM
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Nothing done wrong. Just not enough pressure for the case to make a good gasket. If it bothers you, yes you can bump the powder charge up.
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Old 11-03-2019, 1:59 AM
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Quote:
Originally Posted by TKM View Post
Under-powered loads will not seal and thus leak carbon/smoke back past the case mouth.
^^^THAT^^^

Quote:
Originally Posted by JagerDog View Post
Nothing done wrong. Just not enough pressure for the case to make a good gasket. If it bothers you, yes you can bump the powder charge up.
^^^AND THAT^^^

and "ME" MAKES 3

Light target/plinking loads in pistols always smoke the cases. Nature of the beast.

No worries.................CHOOTEM
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Old 11-03-2019, 5:56 AM
rsrocket1 rsrocket1 is offline
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Absolutely nothing wrong with those cases. It shows that the flame started creeping below the case mouth when the bullet exited the case, then stopped as the pressure finally built up to where the case expanded to seal the gases in the chamber. If the case were sooted all the way to the back, then there was not enough pressure to stop blowby. I have that happen with several powders and cartridges. It's no problem. If you are anal about sooty cases, bump up the charge and you'll see the soot decrease.

Otherwise, just tumble the cases or wipe the soot off and reload.
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Old 11-03-2019, 8:46 AM
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Magnum pistol or rifle cartridges I'd be concerned about. Hot gas in your face/eyes is no fun.

Best practice is to have the powder charge fill the case.

It comes down to why minimum loads? You want soft shooting blinkers then pick a different powder to fill the case. You want less powder to save pennies - that's a silly reason.

Remember the "book" numbers are guidelines and there are many books with different numbers. Always best to learn the signs of under/over pressure loads and use your brain instead of blindly following the book. Your safety is your responsibility.

Lifelong hobby you picked up there so enjoy! I've been reloading for 25 years and learn things constantly. Sometimes forget stuff, too - doh!
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Old 11-03-2019, 8:52 AM
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"Fill the case with powder"

Actually means not to have empty space. Perfectly acceptable to use a low powder charge and fill the remaining space with wadding.

Some older cartridges like 45 long colt and 45/70 govt have big cases original to accommodate black powder are sometimes hard to fill with modern smokeless powders without resorting to wadding.
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Old 11-03-2019, 9:29 AM
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Quote:
Originally Posted by Epaphroditus View Post
"Fill the case with powder"

Actually means not to have empty space. Perfectly acceptable to use a low powder charge and fill the remaining space with wadding.

Some older cartridges like 45 long colt and 45/70 govt have big cases original to accommodate black powder are sometimes hard to fill with modern smokeless powders without resorting to wadding.
And thatís why they made trail bosss
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Old 11-03-2019, 9:43 AM
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Nothing wrong with those cases or loads. They aren't mag loads. You're good to go. Yes, you could add a wee bit more powder to mid-range load, but, you're fine.
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Old 11-03-2019, 10:00 AM
newbie1234 newbie1234 is offline
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Thanks You , phooohhhh, I feel better now.
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  #12  
Old 11-03-2019, 12:13 PM
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All mine look like that. Every firing makes the brass a little more brittle and harder to seal. I have lots of 9, 40 and 45 that has been loaded several times and show those marks. The revolver brass doesn't seem to get them as bad but they do get them.
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  #13  
Old 11-05-2019, 9:08 AM
Pistol Caliber Carbines Pistol Caliber Carbines is offline
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OP...

I've loaded for minimal power factor for years in 9/40/45.
The soot leak is a common indicator on low-power/low-pressure loads.

To minimize it, try to reduce your OAL like .010...then a few at .020
Then a few at .030

This will increase the seal slightly, bring up the pressure slightly, and may reduce it some.

Also suggest you get a chrono as a tool to see how these loads are performing.
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  #14  
Old 11-05-2019, 10:00 AM
Wrangler John Wrangler John is offline
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Default Low Pressure Loads

Included here is a photo of what can happen when fireforming a cartridge to an improved case design, and not having sufficient powder charge to generate enough pressure to complete the forming. The cartridge is the .35-.348 Winchester Ackley Improved. It is a rimmed case that headspaces on the rim, rather than the shoulder. Going carefully, because loading data is outdated and powders have changed over the years, I selected a starting load. The two examples on the right show that there was insufficient pressure to seal the shoulder / neck junction to the chamber, allowing gas to bypass and dent the case. The case on the left shows a properly formed case that resulted from increasing the charge moderately.



Similarly, a bottle necked rimless case being fireformed with too light a load can shorten in the chamber, leaving the primer protruding from the case slightly, because the brass did not flow to fill the chamber.

Your cases are the straight walled equivalent of these, although not hazardous. I have many such results with low pressure loads, when working up a cartridge the first time. A good tumbling usually removes the smudge, and wiping the case with a patch soaked in a solvent such as Bore Tech's Eliminator at the range just after firing, then wiping with a paper towel, makes short work of tumbling them bright.
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  #15  
Old 11-06-2019, 8:43 AM
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Quote:
Originally Posted by Wrangler John View Post
and wiping the case with a patch soaked in a solvent such as Bore Tech's Eliminator at the range just after firing, then wiping with a paper towel, makes short work of tumbling them bright.
Eliminator has some degree of copper solvent. While it will do as you say, it would be best to get rid of it completely after wiping the brass to keep from finding a greenish-blue case when you get home. It's water-soluble, so a quick rinse will take care of it.
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