GMB Posted July 8, 2016 Share Posted July 8, 2016 I'm looking for a starting point. Trying to develop a IDPA load. Any info is much appreciated. I have looked and I am not finding much. Thanks. Link to comment Share on other sites More sharing options...
robertbank Posted July 8, 2016 Share Posted July 8, 2016 (edited) Looking at the Hogdon online manual I would suggest Clays would not be your best bet. You are going to be at their maximum loading of 3.7 gr just to make bare minimum PF if you are talking 9MM using a 125 gr bullet. There are better powders to use Titegroup for plated/jacketed and 231/Unique for lead come to mind. I use Clays for my revolver loads using 160 gr lead RN bullets to make power factor for revolver division with good results.3.7 gr grains gives me room on power factor and is clean burning. I use a 4.2" GP-100 and a 105.14 MM 686 Smith. Take Care Bob Edited July 8, 2016 by robertbank Link to comment Share on other sites More sharing options...
GMB Posted July 8, 2016 Author Share Posted July 8, 2016 Thanks for the info. I am using 135gr plated. I know there are other choices but I want to give this a run. I have looked at the manual. I'm looking for data that someone has used with success. Thanks Link to comment Share on other sites More sharing options...
kneelingatlas Posted July 8, 2016 Share Posted July 8, 2016 Thanks for the info. I am using 135gr plated. I know there are other choices but I want to give this a run. I have looked at the manual. I'm looking for data that someone has used with success. Thanks Clays under a 135gr plated bullet is my favorite minor load: 3.6gr under a 135gr plated bullet at 1.135" make ~128pf in my CZ Link to comment Share on other sites More sharing options...
GMB Posted July 8, 2016 Author Share Posted July 8, 2016 What's the barrel length on the CZ 4.6in? Link to comment Share on other sites More sharing options...
kneelingatlas Posted July 8, 2016 Share Posted July 8, 2016 4.5" Link to comment Share on other sites More sharing options...
Steve RA Posted July 8, 2016 Share Posted July 8, 2016 3.2 under a 130 gr LSWC goes 1008.7 FPS for me. Link to comment Share on other sites More sharing options...
GMB Posted July 8, 2016 Author Share Posted July 8, 2016 Steve is that a 5in gun? Link to comment Share on other sites More sharing options...
Steve RA Posted July 8, 2016 Share Posted July 8, 2016 Yes, 5" 1911. Win brass, Tula SRP. 1.137 OAL. Link to comment Share on other sites More sharing options...
GMB Posted July 8, 2016 Author Share Posted July 8, 2016 Thanks. Still looking for data for 135gr plated bullets using clays. Need to make minor out of a G-19. Link to comment Share on other sites More sharing options...
Steve RA Posted July 8, 2016 Share Posted July 8, 2016 (edited) Plated and lead shouldn't be too far off. Try the 3.2 at the longest length you can load for your gun/magazines and go from there. Edited July 8, 2016 by Steve RA Link to comment Share on other sites More sharing options...
kneelingatlas Posted July 8, 2016 Share Posted July 8, 2016 Brian, above you said you were looking for a starting point, now it seems you're looking for an exact load in your G19, is that true? Do you own a chrono? have access to one? Link to comment Share on other sites More sharing options...
GMB Posted July 8, 2016 Author Share Posted July 8, 2016 I'm not looking for an exact load, I'm just trying to gather as much info as possible from current shooters using these components. I appreciate the info you provided. I do have a chrono. Thanks Link to comment Share on other sites More sharing options...
kneelingatlas Posted July 8, 2016 Share Posted July 8, 2016 (edited) In my experience velocity drops ~6% per inch of barrel length so if you have a 4" barrel you can expect to make minor between 3.6gr and 3.7gr. So I suggest you pick an OAL for your barrel/mags, load 6-10 rounds each: 3.2gr, 3.4gr, 3.6gr, 3.8gr and shoot them over the chrono. Edited July 8, 2016 by kneelingatlas Link to comment Share on other sites More sharing options...
GMB Posted July 8, 2016 Author Share Posted July 8, 2016 That is the plan. My main concern is pressure, I had an experience once with a .40 I was loading for major at factory OAL. not good but at least there was no damage to the gun. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted July 8, 2016 Share Posted July 8, 2016 I had an experience with a .40 major Big difference between loading 9mm Minor, and .40 Major ... Link to comment Share on other sites More sharing options...
kneelingatlas Posted July 8, 2016 Share Posted July 8, 2016 That is the plan. My main concern is pressure, I had an experience once with a .40 I was loading for major at factory OAL. not good but at least there was no damage to the gun. the 9x19 case is a lot tougher than the 40 case, and like Jack says, there's a big difference between minor and major. Clays is a pretty pressure sensitive powder, but you know when you push it too hard long before you blow anything up. I've loaded 147s at 1.1" and that's a little much for Clays and it let's you know with the sound and accuracy: pop, pop, POW, pop, pop... How long can you load the 135s in your Glock? Link to comment Share on other sites More sharing options...
GMB Posted July 8, 2016 Author Share Posted July 8, 2016 I'm gonna go 1.155 for starters, they fit in the mag so I will see how they run. Link to comment Share on other sites More sharing options...
Steve RA Posted July 8, 2016 Share Posted July 8, 2016 Do a Plunk test in your chamber before you load very many ! Link to comment Share on other sites More sharing options...
GMB Posted July 9, 2016 Author Share Posted July 9, 2016 defiantly will not sure of the tolerances of the aftermarket barrel. Thanks for all the input. I have a good starting point now. Link to comment Share on other sites More sharing options...
Steve RA Posted July 9, 2016 Share Posted July 9, 2016 Good, let us know what your final results are. Link to comment Share on other sites More sharing options...
Scootertheshooter Posted July 10, 2016 Share Posted July 10, 2016 Glock barrel do run a bit quicker than most from my experience Link to comment Share on other sites More sharing options...
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