jwrowland77
Member
Aren't you running 1.180 right now?
9mm 124gr RN HPCB Titegroup - HELP
- Thread starter poetdante
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TenDriver
Member
Seat them to 1.140-1.135 and your rounds will be fine with the charge you have.
Do not up your charge, just reduce your OAL.
Do not up your charge, just reduce your OAL.
jwrowland77
Member
That's what I was trying to say. I'm not the clearest at times. Lol.
Sorry. Dang painkillers got ahold of me.
They were running. A failure to eject now and then. About 3 out of 30
srtolly
Member
I'm using a Rainer 124g HP with 4.0g of Titegroup and COAL of 1.12 and have no problem from my SW9VE or any other. This has been my standard 9mm load for a couple years of USPSA.
1SOW
Member
TenDriver is right.
Your oal is too long---pressures too low.
Hogdon lists the 125 Sierra FMJ at 1.090" and the same loads. So does the LEE Reloading Manual. The thick plated bullets can use jacketted data.
Your bullet should be fine at 1.125" or so. Start again with with 10 each: 3.9, 4.0, 4.1grs. All 3 should of these loads should feed, fire and extract. They'll also be just a little cleaner shooting---but TG is dirty.
Your oal is too long---pressures too low.
Hogdon lists the 125 Sierra FMJ at 1.090" and the same loads. So does the LEE Reloading Manual. The thick plated bullets can use jacketted data.
Your bullet should be fine at 1.125" or so. Start again with with 10 each: 3.9, 4.0, 4.1grs. All 3 should of these loads should feed, fire and extract. They'll also be just a little cleaner shooting---but TG is dirty.
What manual gave you this load? I can understand the OAL due to the hp being shorter
Thanks for all of your help guys. I managed to shorten my 1.180 loads to 1.135 and load another batch to the same. Sticking with my manual data for the first 1000 reloads. Figure by then all my stuff will have paid for itself in savings and I can get a chronograph to push hot loads. It is interesting on charges with titegroup. Hodgdon says 3.6 to 4.1 with 1.150. My manual says 4.0 to 4.4 with 1.135. And I think another i came across had 3.9 to 4.2 with 1.115. I figure middle ground should be safe.
Should i be surprised my pistol cycled with 4gr and 1.180 to 1.185 OAL?
Should i be surprised my pistol cycled with 4gr and 1.180 to 1.185 OAL?
Mad Chemist
Member
Longer OAL reduces pressure. If the pressure drops too low reliability will be affected.
I load mine at 1.142" with 3.9-4.0 gr of Tightgroup. I shoot them from a S&W Shield.
I load mine at 1.142" with 3.9-4.0 gr of Tightgroup. I shoot them from a S&W Shield.
1SOW
Member
The reason different load manuals show different ranges of OALs and powder loads, is that THEY are not shooting your bullet out of a pistol. They each TEST LOADS using a device with a bbl that measures pressures and speeds, etc. It's NOT what must be loaded. It's what they recorded with what THEY loaded.
Some will show results at 1.090" OALs and some at 1.150" oals.
They load data is perfectly safe IF you don't load SHORTER than the published data. You can always go longer and be safe. If it's safe at 1.090", the 1.125 is also safe (with less pressure generated.
Because not ALL specific bullets are listed, using the same type and weight bullet can be loaded safely using the load manual data for say a Sierra 124 RN bullet. ALL as long as you start at the LOW END of the data and work up..
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p5200
Member
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- Jul 20, 2009
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I have a RCBS Chargemaster 1500 and when I used Tite group it began to stick and actually try to eat the plastic hopper and, the green base up very quickly. I just thought I would mention that as I would hate for anyone to get there scale/dispenser ate all up. It's a shame too, because I got some pretty good groups using 3.9-4.1grs. with my M&P 40 using a KKM Precision 40-9mm conversion barrel. 
TenDriver
Member
FYI, 1.135 is the shortest you can reliably seat with that bullet. Any deeper and you're seating below the ogive. I went through that mess last year with lots of bullet setback while I was still at the reloading bench.
TenDriver
Member
You hit the nail on the head.
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