Norone Posted March 23 Share Posted March 23 CED IR. 60 degrees. Light front wind. 147gr JHP, 1.16, same brass/primer/bullet, 2011 bull KKM and never cleaned barrel. 821, 834, 844, 858, 863, 877, 886.......? Upwards? My first shot on the chrono for years is always the slowest but this was odd. Wasn't set back. I check that. Doesn't even hit the ramp with a nose anyways. Here's an even odd'r part: 147gr RN, Blues, 1.17, samsies.... 910, 908, 914 - SD of 6? Any insights would be helpful! Link to comment Share on other sites More sharing options...
Joe4d Posted March 23 Share Posted March 23 check crimp on the JHP loads,, take a bullet measure OAL then push on it hard on a bench, see if you are getting bullet setback. Link to comment Share on other sites More sharing options...
Farmer Posted March 23 Share Posted March 23 I have had that happen at times too. They will climb and then at times the last one is lower. Thought it might be bbl heating up but it doesn’t do it consistently. I DID find that if I use black marker on shiny bullets it doesn’t happen. Link to comment Share on other sites More sharing options...
Runswithwood1 Posted March 24 Share Posted March 24 What is the likelyhood that more powder got dropped into the hotter showing loads? I've initially had some issues with my dillion dumping a little more powder than needed Link to comment Share on other sites More sharing options...
Nolan Posted March 24 Share Posted March 24 1 hour ago, Runswithwood1 said: What is the likelyhood that more powder got dropped into the hotter showing loads? I've initially had some issues with my dillion dumping a little more powder than needed In that case you would have had to load the magazine in the reverse sequence to loading the rounds, ie last round out of the press, first round into the magazine. I would suspect the chrono before I would suspect the the gun or the press. Nolan Link to comment Share on other sites More sharing options...
shred Posted March 24 Share Posted March 24 I'd guess chamber heating that then transfers to the rounds and powder, but just looking at one or two strings or a few shots could just be coincidence. Link to comment Share on other sites More sharing options...
Dr. Phil Posted March 24 Share Posted March 24 On 3/23/2024 at 12:43 PM, Norone said: CED IR. 60 degrees. Light front wind. 147gr JHP, 1.16, same brass/primer/bullet, 2011 bull KKM and never cleaned barrel. 821, 834, 844, 858, 863, 877, 886.......? Upwards? My first shot on the chrono for years is always the slowest but this was odd. Wasn't set back. I check that. Doesn't even hit the ramp with a nose anyways. Here's an even odd'r part: 147gr RN, Blues, 1.17, samsies.... 910, 908, 914 - SD of 6? Any insights would be helpful! Are you wondering why the Blue bullets show more velocity with the same charge than the jacketed? Link to comment Share on other sites More sharing options...
Farmer Posted March 25 Share Posted March 25 (edited) 1 hour ago, Dr. Phil said: Are you wondering why the Blue bullets show more velocity with the same charge than the jacketed? No he’s wondering why the vel climbs with the jacketed. Like I said once I started taking a black sharpie to the shiny bullets I had less problems and better readings, especially with lower sun levels. Edited March 25 by Farmer Link to comment Share on other sites More sharing options...
Dr. Phil Posted March 25 Share Posted March 25 I thought so too at first but the part he seemed to think was more strange the velocities didn't do that. Probably is time for yhe marker. Good reason to use coated bullets. Link to comment Share on other sites More sharing options...
Nolan Posted March 25 Share Posted March 25 1 hour ago, Dr. Phil said: I thought so too at first but the part he seemed to think was more strange the velocities didn't do that. Probably is time for yhe marker. Good reason to use coated bullets. Good reason to pick up one of the used LabRadar's being sold relatively cheap in the classified section as people buy the new hotness or buy the Garmin. My LabRadar has worked well for me and it doesn't care what type of bullets I'm using, or the orientation of the sun, wind, or phase of the moon. Nolan Link to comment Share on other sites More sharing options...
Tunachaser Posted April 3 Share Posted April 3 On 3/24/2024 at 8:35 PM, Nolan said: Good reason to pick up one of the used LabRadar's being sold relatively cheap in the classified section as people buy the new hotness or buy the Garmin. My LabRadar has worked well for me and it doesn't care what type of bullets I'm using, or the orientation of the sun, wind, or phase of the moon. Nolan ^^^^X2 ^^^^ Link to comment Share on other sites More sharing options...
IHAVEGAS Posted April 3 Share Posted April 3 What does the bore look like? You could make a case that the jacketed bullets were cleaning lead out of the barrel for you. Link to comment Share on other sites More sharing options...
Norone Posted April 3 Author Share Posted April 3 UPDATE- There was some, a little, not much at all, set back on the FMJ. Not the Blues. Also, I have never cleaned the barrel. My CED always has first round low fps. So I looked further and boom there it was- the brass wasn't all the same as the vendor I bought from said it was. So everything y'all said was a contribution. Gonna get a LAB or Garmin soon too. Hey FARMER- Black magic marker? You mean the crimp station? Thank you all. Link to comment Share on other sites More sharing options...
Farmer Posted April 4 Share Posted April 4 Naw, like this. Link to comment Share on other sites More sharing options...
IHAVEGAS Posted April 7 Share Posted April 7 (edited) On 4/3/2024 at 3:07 PM, Norone said: So I looked further and boom there it was- the brass wasn't all the same as the vendor I bought from said it was. I have never sorted the range brass I use, or heard of someone having significant variance in velocity due to using mixed brass in a 9mm 130 ish power factor load. You may have the answer but it seems a bit fishy. Edited April 7 by IHAVEGAS Link to comment Share on other sites More sharing options...
Joe4d Posted April 7 Share Posted April 7 2 hours ago, IHAVEGAS said: I have never sorted the range brass I use, or heard of someone having significant variance in velocity due to using mixed brass in a 9mm 130 ish power factor load. You may have the answer but it seems a bit fishy. yeh I call BS on that one.. Even if it was true the velocities would vary randomly not climb... Your sizer is worn out/ too big, or need a crimp adjustment.. You are getting bullet setback with the jacketed load. Link to comment Share on other sites More sharing options...
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