j33716 Posted October 15, 2018 Share Posted October 15, 2018 Recently, I have had a few jams that I could not identify how. The slide is 99% forward but not locked up. Cannot push forward. Short version, I found debris in the chamber area. Yellow cylinder type material about 1/16th long and maybe a 1/32 in diameter. Also found as flat 'chips'. Bright yellow in color It gets behind the hood and stops the lock up The question is, what could it be / where is it coming from? It is not metal or brass. Load is; 9mm major Starline new brass Winchester Small Rifle primer Hornady Haps 115 JHP Autocomp Powder Link to comment Share on other sites More sharing options...
racer-x Posted October 15, 2018 Share Posted October 15, 2018 My bet is little bits of corncob media that was stuck in your JHP cavity. Link to comment Share on other sites More sharing options...
Intel6 Posted October 15, 2018 Share Posted October 15, 2018 Typically yellow "sand" debris in the chamber area is actually unburned powder that has had the black/silver graphite (or whatever it is?) coating burned off during firing but did not ignite. Small sand type debris would make sense with the WAC loads as it is a fine ball/flattened ball type powder but "cylinder" debris would not unless you fired some loads with a different powder like possibly Vit? Link to comment Share on other sites More sharing options...
j33716 Posted October 15, 2018 Author Share Posted October 15, 2018 Definitely not corn cob media. I don't have any Un-burned powder is definitely a suspicion. The flake stuff would make sense for WAC I have Vit and understand what you are saying. It has the same shape but longer. Very strange looking Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted October 16, 2018 Share Posted October 16, 2018 How much WAC are you using ? How many rounds do you fire before you clean the gun ? I've been using WAC for years, and have never had the problem, but I usually clean the gun every 200-300 rounds. Link to comment Share on other sites More sharing options...
TONY BARONE Posted October 16, 2018 Share Posted October 16, 2018 You do have corn cob media in the HAP hollow points. When I box haps I look into the nose of every bullet for media and often find it and remove it.One piece of media in a tight gun will lock it up solid. Link to comment Share on other sites More sharing options...
Trent1k1 Posted October 16, 2018 Share Posted October 16, 2018 If he doesn't tumble the bullets in corn cob media, how could he have corn cob media in the JHP? Link to comment Share on other sites More sharing options...
echotango Posted October 16, 2018 Share Posted October 16, 2018 5 minutes ago, Trent1k1 said: If he doesn't tumble the bullets in corn cob media, how could he have corn cob media in the JHP? The manuf tumbles them. I find corn media in my Montana Gold JHP all the time. I wet tumble and have no corn media here. I always check when boxing. It can ruin your match. Link to comment Share on other sites More sharing options...
Ssanders224 Posted October 16, 2018 Share Posted October 16, 2018 Correct. Pretty much all jacketed bullet manufacturers tumble bullets before packaging. However, when done correctly, it should be pretty rare to find it in the finished product Link to comment Share on other sites More sharing options...
Posvar Posted October 17, 2018 Share Posted October 17, 2018 Precision Delta JHP comes with media in them too. I also tumble rounds when done and have learned to clean out match ammo as the media can mess things up. It even happened in my Glock. Link to comment Share on other sites More sharing options...
chevrofreak Posted October 17, 2018 Share Posted October 17, 2018 A lot of powders make cornmeal-like debris when fired. AA7 and Silhouette are notorious for it. Link to comment Share on other sites More sharing options...
Posvar Posted October 17, 2018 Share Posted October 17, 2018 (edited) Interesting. I load HS6 for major and n320 for minor and wonder if mine does that Edited October 17, 2018 by Posvar Link to comment Share on other sites More sharing options...
racer-x Posted October 17, 2018 Share Posted October 17, 2018 (edited) 18 hours ago, Ssanders224 said: Correct. Pretty much all jacketed bullet manufacturers tumble bullets before packaging. However, when done correctly, it should be pretty rare to find it in the finished product +1 My experience with this (lots of pictures too): It was NOT obvious when I first found these pieces that they were corncob. They get fragmented, crushed & blackened up pretty nice after the gun has fired. Last 3 cases of MG JHP115's I've gone through have had quite a bit in them. Before that, not so much. Just depends on how good a job they did with final prep the day they package. Easy to protect against in your final ammo prep. Here is what I do: load 100 into shockbottle case guage flip into empty 100rnd ammo case - inspect JHP's for corncob. I use a pick and compressed air to remove any debris found here. flip into final empty 100rnd ammo case - inspect primers and mark. Edited October 17, 2018 by racer-x edit link Link to comment Share on other sites More sharing options...
Foxbat Posted October 17, 2018 Share Posted October 17, 2018 I sometimes tumble the loaded rounds to remove grease and make them shine, and after that I look at each round, and use the Exacto blade to remove the stuck media pieces. When using MG JHP bullets the job is fairly easy - as the cavity is pretty shallow, but the PD bullets are incredibly hard - it is deep, and it takes a LOT of effort to pull all the stuff out. Link to comment Share on other sites More sharing options...
Ssanders224 Posted October 17, 2018 Share Posted October 17, 2018 11 minutes ago, Foxbat said: I sometimes tumble the loaded rounds to remove grease and make them shine, and after that I look at each round, and use the Exacto blade to remove the stuck media pieces. When using MG JHP bullets the job is fairly easy - as the cavity is pretty shallow, but the PD bullets are incredibly hard - it is deep, and it takes a LOT of effort to pull all the stuff out. Wont stick Link to comment Share on other sites More sharing options...
DirtDiver Posted October 22, 2018 Share Posted October 22, 2018 I'm going with bits of corn cob media stuck in the end of the JHP tips after tumbling roader rounds to clean grease from cases. Link to comment Share on other sites More sharing options...
j33716 Posted October 24, 2018 Author Share Posted October 24, 2018 In the end, I found it was contaminated powder. Link to comment Share on other sites More sharing options...
HoMiE Posted October 24, 2018 Share Posted October 24, 2018 On 10/16/2018 at 7:29 PM, chevrofreak said: A lot of powders make cornmeal-like debris when fired. AA7 and Silhouette are notorious for it. I use to get that gritty cornmeal looking stuff when using Silhouette powder in open gun. Link to comment Share on other sites More sharing options...
racer-x Posted October 24, 2018 Share Posted October 24, 2018 12 hours ago, j33716 said: In the end, I found it was contaminated powder. Did you find the same debris sifting through the un-burnt WAC powder? Link to comment Share on other sites More sharing options...
Broncman Posted October 24, 2018 Share Posted October 24, 2018 Lower charge weights seem to leave more of the funky looking grit behind in my open pistol. I do not like tight Chambers in my pistols. Link to comment Share on other sites More sharing options...
j33716 Posted October 27, 2018 Author Share Posted October 27, 2018 I looked back into the WAC bottle (8lb), poured some out into a plate Here is what it looked like. It is a flake powder. It should not have the cylinder type material. It looks like an extruded powder. It was towards to bottom of the bottle (last lb) I opened a new bottle and it was clean. Link to comment Share on other sites More sharing options...
j33716 Posted October 27, 2018 Author Share Posted October 27, 2018 On 10/24/2018 at 8:23 AM, racer-x said: Did you find the same debris sifting through the un-burnt WAC powder? Yep, take a look at the picture. It was towards the bottom of the 8lb bottle Assuming the 'debris' is heavier than the powder, it makes sense it would be at the bottom Also, I tested with new powder. Did not change the press. When I ran new powder, the charge went down .2 grains in weight Meaning.... the other material is obviously heavier. Adjusted charge back to 7.7 with new powder and all went well for 1000 rounds Shot 1k and no debris Link to comment Share on other sites More sharing options...
MetricPound Posted October 31, 2018 Share Posted October 31, 2018 Don't mix powders, and if you didn't, then winchester or someone else would like to know about this problem. What lot#? My 115gn HAPs have corn cob stuck in the cavities. It's like buying those bang-snaps that are packed in sawdust. Link to comment Share on other sites More sharing options...
Sarge Posted October 31, 2018 Share Posted October 31, 2018 On 10/17/2018 at 5:20 PM, Foxbat said: I sometimes tumble the loaded rounds to remove grease and make them shine, and after that I look at each round, and use the Exacto blade to remove the stuck media pieces. When using MG JHP bullets the job is fairly easy - as the cavity is pretty shallow, but the PD bullets are incredibly hard - it is deep, and it takes a LOT of effort to pull all the stuff out. I have a small compressor in my loading room. I fill my Hundo case gauge, put a thin piece of plexiglass on top and flip it over. Then just blow the media out before boxing up. You are right. PD JHP are very deep holes Link to comment Share on other sites More sharing options...
racer-x Posted October 31, 2018 Share Posted October 31, 2018 1 hour ago, Sarge said: I have a small compressor in my loading room. I fill my Hundo case gauge, put a thin piece of plexiglass on top and flip it over. Then just blow the media out before boxing up. You are right. PD JHP are very deep holes That's exactly what I do! My last 3 cases of MG's have had a LOT of the corncob packaged with them - the bullets are very shiny though Air compressor next to bench is super handy for cleaning your guns & keeping your reloading press running 100%. Link to comment Share on other sites More sharing options...
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