nelly Posted April 4, 2013 Share Posted April 4, 2013 I have been loading my MG 124 JHP's & Win Auto Comp (6.8grs) at 1.145 for Glock Mags with good results, I also have been loading some 124gr MG CMJ with 8.2grs of HS6 for my STI mags at 1.155-1.160 with good results.I want to load some 124gr MG CMJ's with 6.8grs of Auto Comp for my STI-TruBor 9mm Major, should I stay at 1.155-1.160 ? This OAL works fine with HS6 , can I use this same OAL for Win Auto Comp & 124gr CMJ's ? Link to comment Share on other sites More sharing options...
gng4life Posted April 5, 2013 Share Posted April 5, 2013 If that's the OAL that works well with your pistol and mags, then stay with it. Modify the powder drop to match your desired PF. I would start a little lower and work your way up. I usually load up about 15 rounds at multiple powder charges and run them over the chrono to find the one I want. FWIW, I usually load my STI rounds out to 1.165. Link to comment Share on other sites More sharing options...
nelly Posted April 5, 2013 Author Share Posted April 5, 2013 Thanks for the feedback, If you take a look at my previous post right before this titled "(9mm Major Velocity Difference) you'll see why I kinda got thrown off track- I put the 6.8grs Win Auto Comp 124gr MG JHP (seated deeper 1.145 for my Glock Mags) in my STI TruBor & ran these over the Chrono with higher Velocities than I got out of my G17 Racegun. My thinking is I'd be loading the same weight Tip 124 CMJ & the same 6.8grs of Auto Comp so in keeping with my OAL's from my STI, the right Oal should be around 1.160 (I think the 124 JHP's that I loaded to short length for Gl7 are much shorter than my STI loads & it increased the Velocity-Just Sayin,)but your suggestion is spot on, Make a few and then run them over the Chrono.. Link to comment Share on other sites More sharing options...
glockdude1 Posted April 6, 2013 Share Posted April 6, 2013 I have been running MG CMJ with N320 at 1.140, out of a Glock 34 and it works great Link to comment Share on other sites More sharing options...
Dacsoft Posted April 6, 2013 Share Posted April 6, 2013 I use 1.146 for MG 124 CMJ, shooting through different guns. I have had no issues with this OAL. Sent from my SPH-D710 using Tapatalk 2 Link to comment Share on other sites More sharing options...
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