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Coating failure. How did your barrel look afterwards? Even if you bought hi-tek coated bullets commercially I would still perform the smash test and acetone test prior to shooting. Sometimes getting the coating to adhere properly to the bullet is more art than science.
Your pics seem to refute the claims made on their website. Do you have any bullets left to perform a smash test on? https://youtu.be/yrbPjbk0b4g |
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Beating it flat as a pancake is not the correct stress test.
Stand it upright or lay it down on it's side. I prefer to stand them up. Then give it one(1) good wack, next examine the bullet to see if the coating is loose of flaking off. Here is a photo of some recovered bullets. I coated these myself with Hi-Tek from bayou bullets. 10mm on the left, 1250 fps, 45 acp on the right, 900 fps. 
Might be that those bullets suffered coating loss at the point of impact and not inside the barrel. Can you shoot a few in a less destructive back-stop and see how they hold up? |
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Quoted:
Beating it flat as a pancake is not the correct stress test. Stand it upright or lay it down on it's side. I prefer to stand them up. Then give it one(1) good wack, next examine the bullet to see if the coating is loose of flaking off. Here is a photo of some recovered bullets. I coated these myself with Hi-Tek from bayou bullets. 10mm on the left, 1250 fps, 45 acp on the right, 900 fps. Might be that those bullets suffered coating loss at the point of impact and not inside the barrel. Can you shoot a few in a less destructive back-stop and see how they hold up? Well I actually think the beat-to-hell test was successful, even after that it was not flaking off. I do not have a less destructive backstop to shoot, however don't think that the backstop has anything to do with the rifling marks on the bullet. |
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Well I actually think the beat-to-hell test was successful, even after that it was not flaking off. I do not have a less destructive backstop to shoot, however don't think that the backstop has anything to do with the rifling marks on the bullet. Quoted:
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Beating it flat as a pancake is not the correct stress test. Stand it upright or lay it down on it's side. I prefer to stand them up. Then give it one(1) good wack, next examine the bullet to see if the coating is loose of flaking off. Here is a photo of some recovered bullets. I coated these myself with Hi-Tek from bayou bullets. 10mm on the left, 1250 fps, 45 acp on the right, 900 fps. Might be that those bullets suffered coating loss at the point of impact and not inside the barrel. Can you shoot a few in a less destructive back-stop and see how they hold up? Well I actually think the beat-to-hell test was successful, even after that it was not flaking off. I do not have a less destructive backstop to shoot, however don't think that the backstop has anything to do with the rifling marks on the bullet. You will always have rifling mark on a fired bullet, even jacketed and solid copper. |
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You will always have rifling mark on a fired bullet, even jacketed and solid copper. Quoted:
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Beating it flat as a pancake is not the correct stress test. Stand it upright or lay it down on it's side. I prefer to stand them up. Then give it one(1) good wack, next examine the bullet to see if the coating is loose of flaking off. Here is a photo of some recovered bullets. I coated these myself with Hi-Tek from bayou bullets. 10mm on the left, 1250 fps, 45 acp on the right, 900 fps. Might be that those bullets suffered coating loss at the point of impact and not inside the barrel. Can you shoot a few in a less destructive back-stop and see how they hold up? Well I actually think the beat-to-hell test was successful, even after that it was not flaking off. I do not have a less destructive backstop to shoot, however don't think that the backstop has anything to do with the rifling marks on the bullet. You will always have rifling mark on a fired bullet, even jacketed and solid copper. Grooves yes, but they should not cut through the coating on a coating bullet. |
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Grooves yes, but they should not cut through the coating on a coating bullet. Quoted:
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Beating it flat as a pancake is not the correct stress test. Stand it upright or lay it down on it's side. I prefer to stand them up. Then give it one(1) good wack, next examine the bullet to see if the coating is loose of flaking off. Here is a photo of some recovered bullets. I coated these myself with Hi-Tek from bayou bullets. 10mm on the left, 1250 fps, 45 acp on the right, 900 fps. Might be that those bullets suffered coating loss at the point of impact and not inside the barrel. Can you shoot a few in a less destructive back-stop and see how they hold up? Well I actually think the beat-to-hell test was successful, even after that it was not flaking off. I do not have a less destructive backstop to shoot, however don't think that the backstop has anything to do with the rifling marks on the bullet. You will always have rifling mark on a fired bullet, even jacketed and solid copper. Grooves yes, but they should not cut through the coating on a coating bullet. They have to, the coating is very thin. This is a properly Powder Coated bullet. PC is thicker than Hi-Tek. 
Notice the rifling grooves. These are properly coated Hi-Tek bullet. Notice the rifling grooves.
This is a photo of fired Plated bullets, notice the rifling grooves and the lack of plating. http://s338.photobucket.com/user/joe1944usa/media/Plated%20VS%20Jacketed%20Bullets/PlatedvsJacketed2.jpg.html |
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I am thinking folks are really overthinking this whole thing .
Hitting the bullet with a hammer to try and predict its condition when you shoot it out of a gun seems like two very different things to me . The only things I am going to look at are cost ,accuracy and what crap gets left behind in the barrel and what I need to do to clean that barrel . In other words how the bullet performs when I shoot it in my guns at whatever velocity I need . If you guys feel the hammer thing shows you anything go right ahead but I will stick to my shooting to test method. |
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I am thinking folks are really overthinking this whole thing . Hitting the bullet with a hammer to try and predict its condition when you shoot it out of a gun seems like two very different things to me . The only things I am going to look at are cost ,accuracy and what crap gets left behind in the barrel and what I need to do to clean that barrel . In other words how the bullet performs when I shoot it in my guns at whatever velocity I need . If you guys feel the hammer thing shows you anything go right ahead but I will stick to my shooting to test method. They are plenty accurate, I just don't want to ruin my suppressor shooting them through it. |
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All the hammer test does is prove if the PC is sticking to the bullet. If PC does not flake off the hammered bullet, it will not fail when you fire it. If PC flakes off, bullet was not clean before coating and baking, and will lead the barrel. Something good to know before firing your PC bullets. |
| I've run about 400 of the 203gr PP bullets through my 8.5 300blk with an AAC 7.62sd suppressor with no signs of leading. I just broke it down to try and take photos but with my iPhone all I got was blurry garbage. Bore looked great and the suppressor was a little dirty. No leading or coating that I could see. |
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