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Posted: 10/21/2017 9:20:07 PM EDT
This is .50 beowulf, 335 jhp raniers loaded to alexander arms minimum with lilgun.
Is the flame marks around the bolt ok? Too much fire? Primers look ok? They almost look like they are packed into the corners a bit.  
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Posted: 10/21/2017 9:26:44 PM EDT
[#1]
Primers look good.
I haven't shot .50 BW, but looks like too slow a powder or not enough, based on the residue. Not getting a good seal or more complete burn. |
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Posted: 10/21/2017 9:37:31 PM EDT
[#2]
Your primers don’t look like they are deformed in any way, but sooty cases usually mean too light a load. As Brony said, either the powder was too slow, or the load was too light. Both can cause all that soot.
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Posted: 10/21/2017 9:48:29 PM EDT
[#3]
Quote HistoryQuoted:
Your primers don’t look like they are deformed in any way, but sooty cases usually mean too light a load. As Brony said, either the powder was too slow, or the load was too light. Both can cause all that soot. Max on the table is 37.7 What would you try next? 36.5? |
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Posted: 10/21/2017 9:56:32 PM EDT
[#4]
I agree, pressure is too low to seal the chamber properly. Work up.
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Posted: 10/21/2017 10:13:14 PM EDT
[#5]
Quote HistoryQuoted:
Your primers don’t look like they are deformed in any way, but sooty cases usually mean too light a load. That being said, OP, .50 Beowulf is a fairly low-pressure round (33kPSI), to keep within limits of the AR-15 bolt structure (larger bolt face, lower PSI, same overall force). Because of that, a full-pressure load is NOT going to produce the same kind of super-flattened primers that you'd see with, say, M193. Feel free to work up, but don't expect to use the same primer signs for this that you would for 5.56. |
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Posted: 10/21/2017 10:22:51 PM EDT
[#6]
What sort of signs would show up with this caliber?
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Posted: 10/21/2017 10:25:48 PM EDT
[#7]
I agree with the others. Sooty usually means light.
I'm not familiar with the 50 BW how does it head space? The reason I ask is you may see improvement if you can crimp a little tighter like for a magnum revolver. If it's taper crimp like an auto pistol there isn't anything you can do. At least crimp wise. Motor |
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Posted: 10/21/2017 10:41:30 PM EDT
[#8]
You actually are low on pressure. The primers should show a light print of the breech face on them, but not so much that the primer dimple starts to blow back out or the edge starts to fill in.
I call it "coining". I want to see light to moderate coining on the primer. Here's a fine example photo: 
Left to right: Low pressure with no coining, good pressure with the right amount of coining, and too much pressure with a flattened primer. |
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Posted: 10/21/2017 10:51:32 PM EDT
[#9]
Try using a little more crimp, if that doesn't get rid of the soot, then you might have to increase your charge by a couple grains.
As the others have said, no real pressure signs so far from the looks of things. Be sure to clean up your chamber/throat, bet it's pretty dirty by now. That and the rest of your receiver innards. |
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Posted: 10/21/2017 11:08:56 PM EDT
[#10]
Quote HistoryQuoted:
You actually are low on pressure. The primers should show a light print of the breech face on them, but not so much that the primer dimple starts to blow back out or the edge starts to fill in. I call it "coining". I want to see light to moderate coining on the primer. Here's a fine example photo: http://www.massreloading.com/images/flattened.jpg Left to right: Low pressure with no coining, good pressure with the right amount of coining, and too much pressure with a flattened primer. The Beowulf is a "light taper crimp" which I have in there. It's not getting much more crimped unless I start to muscle it. Thank you!!! |
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Posted: 10/22/2017 12:06:55 AM EDT
[#11]
Ok then your only choice is to increase the powder charge.
From what you describe it must head space on the case mouth like a auto pistol round. How's your neck tension? Are you getting good resistance when seating? Can you possibly back the expander/mouth flare up some? Reducing mouth flare will increase neck tension. Most people don't realize you never regain the tension lost where the mouth flare is. No amount of taper crimping can make the brass smaller than the bullet once it is expanded. At least not while the bullet is still within the casing. Motor |
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Posted: 10/22/2017 11:08:09 AM EDT
[#12]
As a LEE hater of some fame, even I am forced to admit that their collet type rifle "Factory Crimp Dies" are really, really good. If you go to their site they show availability of some custom order over runs on the the 50 Beowulf crimping die. Order one, you'll like it.
Yes, it did hurt to admit that they do really well on some things  .
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Posted: 10/22/2017 2:45:19 PM EDT
[#13]
"collet type rifle "Factory Crimp Dies" are really, really good."
And I know more than one person that managed to reduce the size of bullets by accident by poor adjustment. |
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Posted: 10/22/2017 5:03:43 PM EDT
[#14]
Quote HistoryQuoted:
"collet type rifle "Factory Crimp Dies" are really, really good." And I know more than one person that managed to reduce the size of bullets by accident by poor adjustment. |
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Posted: 10/27/2017 3:50:11 PM EDT
[#15]
Quote HistoryQuoted:
"collet type rifle "Factory Crimp Dies" are really, really good." And I know more than one person that managed to reduce the size of bullets by accident by poor adjustment. The collet style only crimps the very end of the case mouth. OP's loads look light to me also. |
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Posted: 10/27/2017 4:00:06 PM EDT
[#16]
Quote HistoryQuoted:
Primers look good. I haven't shot .50 BW, but looks like too slow a powder or not enough, based on the residue. Not getting a good seal or more complete burn. |
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Posted: 10/27/2017 6:28:55 PM EDT
[#17]
Quote HistoryQuoted:
Primers look good. I haven't shot .50 BW, but looks like too slow a powder or not enough, based on the residue. Not getting a good seal or more complete burn. |
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Posted: 10/27/2017 6:34:37 PM EDT
[#18]
Quote HistoryQuoted:
You actually are low on pressure. The primers should show a light print of the breech face on them, but not so much that the primer dimple starts to blow back out or the edge starts to fill in. I call it "coining". I want to see light to moderate coining on the primer. Here's a fine example photo: http://www.massreloading.com/images/flattened.jpg Left to right: Low pressure with no coining, good pressure with the right amount of coining, and too much pressure with a flattened primer. |
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Posted: 10/29/2017 4:20:13 PM EDT
[#19]
Quote HistoryQuoted:
I can see that happening with the Lee push through FCD, but how does that happen with the collet style crimp die? The collet style only crimps the very end of the case mouth. OP's loads look light to me also. Quote HistoryQuoted:
Quoted:
"collet type rifle "Factory Crimp Dies" are really, really good." And I know more than one person that managed to reduce the size of bullets by accident by poor adjustment. The collet style only crimps the very end of the case mouth. OP's loads look light to me also. |
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