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Post by campguy308 on Jan 10, 2016 14:42:48 GMT -8
I have a BHW 264LBC 20" 1x8 twist Type 1 rifle with a Tactical Ambush 7.62x39 bolt. I can shoot the factory Hornady 123 Amax load all day long without any problems. However, I have had consistent problems with ejection when using my reloads. I am using 30.5 grains of CFE 223 in Hornady brass under a 123 amax with a light crimp at 2.245". My velocity with this load averages about 2490. The load shoots fine, but I often have a problem with the spent casing not ejecting from the receiver. It comes completely out of the chamber, but then just sits there on top of the magazine, causing a bad jam if there is another round in the magazine below it. The bolt is coming all the way to the rear, and it will pick up the next round, or lock back on an empty magazine, so I don't think it's short stroking. I have had this problem with test loads from 28.5 up to 30.8 grains of CFE 223. I have also tried these same loads using the Nosler CC 123 BTHP, and I have the same problem, but less frequently. I have not experienced this issue with the factory Hornady load at all. Any advice? Thanks.
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204ar
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Post by 204ar on Jan 11, 2016 16:02:11 GMT -8
Do your reloads chamber and extract manually without problems? Thinking you may need to bump shoulders slightly more.
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Deleted
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Post by Deleted on Jan 11, 2016 17:10:49 GMT -8
I have a BHW 264LBC 20" 1x8 twist Type 1 rifle with a Tactical Ambush 7.62x39 bolt. I can shoot the factory Hornady 123 Amax load all day long without any problems. However, I have had consistent problems with ejection when using my reloads. I am using 30.5 grains of CFE 223 in Hornady brass under a 123 amax with a light crimp at 2.245". My velocity with this load averages about 2490. The load shoots fine, but I often have a problem with the spent casing not ejecting from the receiver. It comes completely out of the chamber, but then just sits there on top of the magazine, causing a bad jam if there is another round in the magazine below it. The bolt is coming all the way to the rear, and it will pick up the next round, or lock back on an empty magazine, so I don't think it's short stroking. I have had this problem with test loads from 28.5 up to 30.8 grains of CFE 223. I have also tried these same loads using the Nosler CC 123 BTHP, and I have the same problem, but less frequently. I have not experienced this issue with the factory Hornady load at all. Any advice? Thanks. Check your ejector spring and extractor spring. Have your rounded the corners of your extractor? If it is dropping an empty case on top of the magazine, your problem is in the parts that facilitate ejection. Factory ammunition is working because it is loaded to higher pressure. You are still shooting a relatively low pressure load with CFE. I would be willing to bet you find your problem in the parts mentioned above |
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Post by campguy308 on Jan 11, 2016 18:58:03 GMT -8
Do your reloads chamber and extract manually without problems? Thinking you may need to bump shoulders slightly more. I have not tried to cycle unfired rounds, but they all chamber without issue. I would think that if the shoulder needed bumping back more, it wouldn't go completely into battery? |
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Post by campguy308 on Jan 11, 2016 19:05:19 GMT -8
I have a BHW 264LBC 20" 1x8 twist Type 1 rifle with a Tactical Ambush 7.62x39 bolt. I can shoot the factory Hornady 123 Amax load all day long without any problems. However, I have had consistent problems with ejection when using my reloads. I am using 30.5 grains of CFE 223 in Hornady brass under a 123 amax with a light crimp at 2.245". My velocity with this load averages about 2490. The load shoots fine, but I often have a problem with the spent casing not ejecting from the receiver. It comes completely out of the chamber, but then just sits there on top of the magazine, causing a bad jam if there is another round in the magazine below it. The bolt is coming all the way to the rear, and it will pick up the next round, or lock back on an empty magazine, so I don't think it's short stroking. I have had this problem with test loads from 28.5 up to 30.8 grains of CFE 223. I have also tried these same loads using the Nosler CC 123 BTHP, and I have the same problem, but less frequently. I have not experienced this issue with the factory Hornady load at all. Any advice? Thanks. Check your ejector spring and extractor spring. Have your rounded the corners of your extractor? If it is dropping an empty case on top of the magazine, your problem is in the parts that facilitate ejection. Factory ammunition is working because it is loaded to higher pressure. You are still shooting a relatively low pressure load with CFE. I would be willing to bet you find your problem in the parts mentioned above I have not made any mods to the extractor. I did notice less of a problem when using the 30.5 grain load with the Noslers, and I also noticed they were shooting about 25 fps faster than the amax load with the same charge. I assume that's because of the different ogive shape of the Nosler pill. The Hornady manual says that 31.2 grains of CFE223 is max for the 123 amax. I was trying to keep the load away from that and would have thought the 30.5 grain load at 2490 was plenty stout. I was previously running a different bolt from the same manufacturer until I blew a lug with some hot loads, and I never had the extraction problem with that bolt. I still have it, so I guess I could try using the ejector and extractor springs from that bolt and give it another go. |
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Deleted
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Post by Deleted on Jan 12, 2016 3:50:52 GMT -8
Check your ejector spring and extractor spring. Have your rounded the corners of your extractor? If it is dropping an empty case on top of the magazine, your problem is in the parts that facilitate ejection. Factory ammunition is working because it is loaded to higher pressure. You are still shooting a relatively low pressure load with CFE. I would be willing to bet you find your problem in the parts mentioned above I have not made any mods to the extractor. I did notice less of a problem when using the 30.5 grain load with the Noslers, and I also noticed they were shooting about 25 fps faster than the amax load with the same charge. I assume that's because of the different ogive shape of the Nosler pill. The Hornady manual says that 31.2 grains of CFE223 is max for the 123 amax. I was trying to keep the load away from that and would have thought the 30.5 grain load at 2490 was plenty stout. I was previously running a different bolt from the same manufacturer until I blew a lug with some hot loads, and I never had the extraction problem with that bolt. I still have it, so I guess I could try using the ejector and extractor springs from that bolt and give it another go. Have you checked your upper receiver extension for being out of square? If you have broken a bolt That would be the first place I would look. An out of square receiver makes the bolt take all of the head thrust on one side. Even a good bolt can't stand that kind of pressure. |
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Post by campguy308 on Jan 12, 2016 19:11:51 GMT -8
I haven't looked into that. I am going to put in a new ejector and extractor spring this weekend and do some more troubleshooting.
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Deleted
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Post by Deleted on Jan 12, 2016 19:58:41 GMT -8
Please let us know what your findings are.
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Post by campguy308 on Jan 16, 2016 12:40:26 GMT -8
Please let us know what your findings are. I swapped out the extractor and extractor spring with the set from the other bolt. Headed out to the range this morning with the 30.5 CFE 223 123 Amax load. Fired 8 rounds without any problems. They all ejected just fine. With the other extractor, I couldn't even fire 2 rounds in a row without failure to eject. Looks like there is something funny about that extractor or spring. Problem solved, I'm happy. Thanks everyone. |
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Post by cosh on Jan 16, 2016 12:55:17 GMT -8
Great news! Glad you got it worked out.
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