9mmMike Posted January 13, 2012 Share Posted January 13, 2012 I had the chance to use a chronograph for a nice shooting load in 9x19 that is very accurate. The temperature outside was 51 degrees and the barrel I was shooting measures 3.5" in length. I set up the chrony 10 feet away from muzzle to the first sensor. Powder Accurate No. 5 Charge 6.2 grains Case Winchester 9x19 Bullet Hornady 124 gr XTP HP Primer CCI-500 COAL 1.075" No Crimp Five shot group 1034 FPS 1035 FPS 1035 FPS 1031 FPS 1036 FPS All shots touched each other with 2 going through the same hole. Brass cases just laid down about 3 feet to my right. Recoil was modest and muzzle report was quiet. I was satisfied with this load. I also used Winchester small primers but velocity dropped 20 fps and bumping charge weight .2 grains brought it back up but accuracy started to wane. I really wanted to get 1100 fps out of the 3.5" barrel but I just couldn't get the load there without going too overpressure and losing accuracy to powders that can get there a lot easier. For sh*ts I chronoed' Winchester white box 9mm 115 grain fmj and was consistently getting around 1030 fps out of the same 3.5" barrel. It was very accurate as well. Quote Link to comment Share on other sites More sharing options...
Cy Soto Posted January 13, 2012 Share Posted January 13, 2012 All shots touched each other with 2 going through the same hole. At what distance? Quote Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted January 13, 2012 Share Posted January 13, 2012 The velocities are remarkably similar:) I've done that a few times, with the first five rounds being all the same, but by the time I shot an additional 15 rounds thru the chrono, I get some more dispersion. Same with a 5 shot group - every once in a while I get a remarkable 5-shot group (I have some hanging on my wall over the past 25 years), but when I fire a 12 - 18 round group, I usually get more dispersion. Sounds like you have a great load there for your gun - but you might want to run some more rounds thru the chrono and the target to see the true picture. Good luck, Jack Quote Link to comment Share on other sites More sharing options...
9mmMike Posted January 16, 2012 Author Share Posted January 16, 2012 The target was 15 feet away. I'm sure I could get more deviation if I tried. I shot 15 rounds and was under 10 fps on all. I will do some more and see what happens. Quote Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted January 16, 2012 Share Posted January 16, 2012 The target was 15 feet away. I shot 15 rounds and was under 10 fps on all. Mike, I'd move that target back to at least 45 feet and see how a dozen rounds group. 60 - 80 feet is even better:) That is great deviation on 15 rounds - all new brass? Jack Quote Link to comment Share on other sites More sharing options...
9mmMike Posted January 17, 2012 Author Share Posted January 17, 2012 New brass. I shot 5 again with pretty much same results. Great target load. I would have done more but I just discovered hs6. Quote Link to comment Share on other sites More sharing options...
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