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Posted: 3/24/2016 11:42:07 PM EDT
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Got no response in the SA forum so now I'm here.
Working down sub loads, cFE powder and 147gr bullets in 9mm. 3.5 gr decent sound, cycle action; 3.4 less sound but hit/miss cycling; 3.3 no explosion at all. Move back to 3.5 and they fire. Load a mag with 124gr 5.0 is not hearing safe. All bullets drop in/out of barrel. Slide stripped except for extractor and cleaned. Pistol is xdm 9mm. Back to the range on Tuesday. Thoughts or ideas welcome. Thanks. |
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Quoted: Got no response in the SA forum so now I'm here. Working down sub loads, cFE powder and 147gr bullets in 9mm. 3.5 gr decent sound, cycle action; 3.4 less sound but hit/miss cycling; 3.3 no explosion at all. Move back to 3.5 and they fire. Load a mag with 124gr 5.0 is not hearing safe. All bullets drop in/out of barrel. Slide stripped except for extractor and cleaned. Pistol is xdm 9mm. Back to the range on Tuesday. Thoughts or ideas welcome. Thanks. I'm not sure what your asking? |
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Quoted:
. . . Working down sub loads, cFE powder and 147gr bullets in 9mm. 3.5 gr decent sound, cycle action; 3.4 less sound but hit/miss cycling; 3.3 no explosion at all. Move back to 3.5 and they fire. There's no logical connection I'm aware of between 0.1gr less powder and "no explosion". IOW, the lack of explosion has nothing to do with 3.3gr of powder. Load a mag with 124gr 5.0 is not hearing safe. All gun fire can damage hearing, so I'm not sure what "Not hearing safe" means. All bullets drop in/out of barrel. Slide stripped except for extractor and cleaned. Pistol is xdm 9mm. Back to the range on Tuesday. Thoughts or ideas welcome. Thanks. |
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Shooting through a suppressor? If not you will not attain hearing safe and able to cycle the action.
You are below Hodgdon's min for a XTP, not that that likely matters, even max 4.2gr is well below the speed of sound. In a 9mm case I can't imagine a charge so small ignition became inconsistent, your failures to fire are due to something else, high primers/light strikes, contaminated components, something. If 3.4 was spotty cycling there is no reason to bother lighter. If you want to use less powder go to a faster powder, Bullseye, Titegroup, etc. |
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Can anyone come up with a reason why none of my lighter powdered rounds won't light off? Why would my primers all be bad on the six rounds that failed to light be bad when the previous ~1000 went off great?
I'm a whole lot sharper in the morning, right? The primers got hit marks, some lit on a second hit. Just my luck on these? I will break them down and reprime for Tuesday. Thanks guys |
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Alpha82, I'm going for subsonic with CFE pistol and 147s.
It was the inconsistencies that were making us wonder what was going on. When I reload those rounds I will hand measure the powder, as opposed to using my LNL to measure(probably a better idea in this case). |
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Quoted:
Can anyone come up with a reason why none of my lighter powdered rounds won't light off? Why would my primers all be bad on the six rounds that failed to light be bad when the previous ~1000 went off great? I'm a whole lot sharper in the morning, right? The primers got hit marks, some lit on a second hit. Just my luck on these? I will break them down and reprime for Tuesday. Thanks guys A round fails to fire on the first attempt, then fires on the second/third attempt, is a classic sign of failure to seat the primer fully and bottomed out in the primer pocket. |
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Quoted:
A round fails to fire on the first attempt, then fires on the second/third attempt, is a classic sign of failure to seat the primer fully and bottomed out in the primer pocket. Quoted:
Quoted:
Can anyone come up with a reason why none of my lighter powdered rounds won't light off? Why would my primers all be bad on the six rounds that failed to light be bad when the previous ~1000 went off great? I'm a whole lot sharper in the morning, right? The primers got hit marks, some lit on a second hit. Just my luck on these? I will break them down and reprime for Tuesday. Thanks guys A round fails to fire on the first attempt, then fires on the second/third attempt, is a classic sign of failure to seat the primer fully and bottomed out in the primer pocket. This... and be careful, you are below the minimum charge weight as per Hodgdon. I don't think you being below the minimum charge weight is a good idea.... the different powders need a specific volume of powder and available case space in each different circumstance ( every bullet / cartridge combo ) to function properly. Men and companies spend a lot of time and money researching reloading data. You could end up with some odd nasty results... dirty , incomplete burn, flash over... pressure spikes... all it takes is one below minimum bad apple to ruin your day. I agree with Alpha82... you need a different powder. |
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I'm going for quiet.
New results: pulled a bullet and powder, put empty case(that has been attempted to fire three times)in my pistol and bang! WTH! It doesn't like to work in the cold? I'm cool with the 3.4/3.5 but I want to know why my primers won't fire with low powder charges multiple times but when it's primer only they go off. I'm a believer in Divine intervention so pretty much that's my take on it at this point. It just seems weird that three hits are a no go but an empty fourth lights off. Stupid wolf primers. Thanks. Experiment over. |
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All the rounds were fired multiple times without ignition.
At my buddy's request I unloaded one, keeping the primer intact(time was short so I only did one)and it fired. As I said before, I'm done going low. I will unload the rest and test fire the primers and post up here but I will be sticking to 3.5 on my quiet 9s. |
Ok I asked the same question about primers 2 weeks and it was because I had failed to fully seat some primers. Anchored down my 'bench' a little better (it was wiggling a little) and slowed down a little and paid more attention and the problem went away. Nothing divine about it 
As for trying to go quiet in 9 mm I did the same thing because I have a suppressor on order. CFE is kind of low (slow) down the list from what people generally advise for 'mouse fart' loads. Faster powder such as HP-38/win231 or VV n320 seem to be preferred. Slower powders loaded to minimum levels and bellow can burn inconsistently/incompletely, thus velocity will vary and they will dirty up your gun/suppressor. As you have seen they can also fail to generate enough pressure to reliably cycle your pistol. The faster powders under a heavy bullet will generate more pressure with less powder and thus burn more consistently/completely, and ensuring that all the powder is consumed before the bullet leaves the barrel, minimizing muzzle blast. |
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CFE powder.
The best part: after unloading the six FTF cartridges I ran three of them through the same pistol, primers only. Ignition each time, after being run through the gun as complete bullets no less than three time each as complete rounds. The remaining three primered cases were loaded to 3.5 grains with 147 bullets to be tried on Tuesday. No explanation as to why it happened this way. |
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Quoted:
CFE powder. The best part: after unloading the six FTF cartridges I ran three of them through the same pistol, primers only. Ignition each time, after being run through the gun as complete bullets no less than three time each as complete rounds. The remaining three primered cases were loaded to 3.5 grains with 147 bullets to be tried on Tuesday. No explanation as to why it happened this way. FTF because the primer did not ignite is NOT a primer/powder combination problem. You have some type of other issue going on there. Either improperly seated primers or maybe too much crimp causing deep chambering or a weak striker spring or ??? Motor |
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