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Old 10-18-2013, 14:50   #1
dannyyates
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Any data for 10mm 6.61'' barrel

IM going to go test some loads this weekend. i havent seen any data, for the 10mm, with 6.61'' barrel. i know there has to be someone. that has messed with it. im working up a custom rd. but thats another topic, im going to keep a stock 10mm barrel for it to. also what is the compensator gonna do if anything to the velocity. i have some. serria 150gr jhp, loaded with A#9 15.5gr, up to 16.5gr, and blue dot 12.5gr, to 13.5gr, also gold dot 180 hp, loaded with A#9 14.0gr, to 15.0gr, blue dot 10.2gr, to 11.2gr, and long shot 7.8gr to 8.8gr, all in .2 gains so im sure with a close watch i will find where i need to be and im going to bring some of my older loads i worked up sometime ago win 175gr silver tip with long shot 9.7gr, hornady 155gr, jhp bluedot 13gr, hornady 200gr jhp A#9 13.2gr, if i remember to pickup batterys for the chrono i should have a bundle of data good or bad Click image for larger version

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Last edited by dannyyates; 03-01-2014 at 14:05..
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Old 10-21-2013, 08:29   #2
OhioGlockMan
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I have a 6 inch barrel and find I get a good 100 FPS more then the stock length, an extra .61 inch, I dunno, say like 125 fps would be my guess
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Old 10-21-2013, 09:00   #3
SDGlock23
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I had a LW 6.6" barrel several years ago and did do some testing with it. However I don't really recall all of it, but I can remember shooting the 230gr hardcast from DoubleTap to around 1,230 fps, and I think it was 180's over 1400. I cannot say those were absolute max loads since I've gotten near 1400 fps in my stock Gen4 20 with 180gr, but you'll get an increase for sure, I'd guesstimate around 125-150 fps over the 4.6" barrel, maybe more for the lighter bullets.
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Old 10-21-2013, 22:42   #4
Taterhead
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Cool looking pistol Danny!

I'm looking forward to that range report. Funny that you should mention batteries. I have learned that one the hard way. I make sure to keep a spare in the range bag too.
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Old 11-10-2013, 07:43   #5
scope422
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Good article, should answer some of your questions. I shoot the same set up with the compensator for hunting.

http://www.gunblast.com/10mm.htm
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Old 11-11-2013, 13:42   #6
dannyyates
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i got some data weather sunny 62deg blue dot 11.0gr 180gr gold dot hp set at 1.260 1311fps primers started flating, 10.0gr LS 180gr GDHP set 1.260 1280fps primers looked good, a#9 15.0gr GDHP 1516fps primers looked good, all loads was loaded 1gr less and worked up in .2gr only the blue dot showed any signs of hi psi with primers starting to flating the #9 had the best grooping with 14.7gr avg 1488fps over 10rds i did use cci 350 mag primers with long shot and blue dot and the A#9 i used cci300 large pistol primers im going to try them with the cci 350 set colat 1.270'' primers next none of my brass had any bulge
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Old 11-12-2013, 22:22   #7
Taterhead
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Holy smokes! The 1500 fps A9 load was with a 180? That is ripping along! I am not surprised that the slowest-burning powder got some good benefit from the longer barrel. 15.0 gr is a big ol' ball of expanding gas.

Thanks for the report.
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Nov 11, 2013 at 11:42