Recommendations for 9mm MG124 JHP and Unique? [Archive] - Glock Talk

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gforester
09-06-2011, 17:49
I was trying to work on a load for 124gr. Montana Gold JHP using Unique. I can't find any data on Unique with this bullet. I did look in my Speer book and found that the max load with a 124gr. Speer GDHP was 5.8 grains of Unique. I made up a few bullets with 4.6gr. and it doesn't look like there is much space left for my MG bullets.

I am loading them at 1.080 and may stretch them to 1.090 but am a little concerned about how full the cartridge is. Has anybody loaded these MG124's with Unique at over 5.0gr. before? If so how did they chrono out of a 4" barrel? Does anyone have any tried and true loads for Unique and the MG124 JHP's? I just would like to have a set of lower and upper parameters before I make any more test loads.

GioaJack
09-06-2011, 17:55
A 120 grain cast TC, (123 grains with lube) runs around 1185 out of a 5 inch Trojan with 5 grains of Unique.


Jack

Boxerglocker
09-06-2011, 17:56
If your concerned about a possible compressed load, your more than likely going to have to change powders. I personally stay away from loads that overly fill the case. What type of load are you trying to develop?

WiskyT
09-06-2011, 18:01
Unique fill a 9mm case up, don't worry about it. 4.6 is actually a little light, but it should work. I use 5.2 with a cast 125.

WiskyT
09-06-2011, 18:02
A 120 grain cast TC, (123 grains with lube) runs around 1185 out of a 5 inch Trojan with 5 grains of Unique.


Jack

Jack gets his Trojans from the Irish section of the pharmacy:whistling:

Zombie Steve
09-06-2011, 18:10
I've loaded a 124 grain XTP at 5 grains of Unique, WCC brass, win small primer at 1.060" OAL and it clocked 1,123 fps from a 4" barrel. I've taken that load up to 5.4 grains and 1,200 fps, but that puts you into +P range. Accurate and I never got any signs of overpressure, but it's beyond max in the load data from Hornady. Sierra data shows a max of 5.6 grains with their jhp loaded to 1.075" - 1,150 from a 4" bbl.

The MG bullet is a different shape, but if you start at 4.6 grains and slowly work up, you'll be fine... especially with a slightly longer OAL. Unique isn't that bulky... you just need bigger cases like the .45 auto. :whistling:

:supergrin:

gforester
09-06-2011, 18:34
Wow, that was fast, thanks guys.

Boxerglocker, I'm wanting to make some full power loads (1100fps+) using my MG 124 JHP, with Hornady cases and CCI primers. I have a half dozen made up with the 4.6 grain charge but I haven't chrono'ed them yet. I was hoping to try and duplicate the Hornady self defense ammo loads.

I do have a small amount of Hodgdon Universal and plenty of the HP38 if either of those powders would work better for these bullets.

Zombie Steve, I do appreciate the info you had on the XTP's as I was under the impression that the MG's have a very similar profile as them. Did you use load data from the XTP's to help develop loads for you MG's?

gforester
09-06-2011, 18:36
Jack gets his Trojans from the Irish section of the pharmacy:whistling:

Thanks for that juicy tid bit! :rofl:

Zombie Steve
09-06-2011, 21:48
Sorry... I've only loaded XTP's, but looking at MG's website, they do look very similar. Still, start low and work up. I think you'll find Unique to do a very good job getting you accurate and safe full power loads. Let us know how it turns out.

I was also trying to duplicate that load, and found I could do better. :supergrin:

Boxerglocker
09-06-2011, 22:00
I prefer Power Pistol for my 9mm 124 simulated SD loads.

cole
09-06-2011, 23:09
5.2gr Unique at 1.030 w/ 124gr Plated FP = ~1200fps G17
4.8gr Unique at 1.030 w/ 124gr Plated FP = ~1130fps G17

I'm running 4.5gr at 1.060 w/ 124gr Plated FP now. Smooth runnin' load with a longer OAL that runs better in all my 9mms. Add a bit of powder for FMJ but OAL will be similar.

tantor
09-07-2011, 06:35
Cole,

If you are using plated bullets, do you think those loads will be good with HSM bullets? I am using 124 HSM bullets but think I made a mistake by getting Magnum primers along with small pistol primers.

BC from KY

fredj338
09-07-2011, 08:49
I've loaded a 124 grain XTP at 5 grains of Unique, WCC brass, win small primer at 1.060" OAL and it clocked 1,123 fps from a 4" barrel. I've taken that load up to 5.4 grains and 1,200 fps, but that puts you into +P range. Accurate and I never got any signs of overpressure, but it's beyond max in the load data from Hornady. Sierra data shows a max of 5.6 grains with their jhp loaded to 1.075" - 1,150 from a 4" bbl.

The MG bullet is a different shape, but if you start at 4.6 grains and slowly work up, you'll be fine... especially with a slightly longer OAL. Unique isn't that bulky... you just need bigger cases like the .45 auto. :whistling:

:supergrin:

About the same for me too. The XTP is pretty close to the MG, I think the MG is a bit harder bullet. DOn't worry about compressing Unique, it runs fine that way in the 9mm. With 5.5gr under a 124grXTP @ 1.120", it's running 1170fps in my G17. The GD o/ 5.8gr runs 1190fps @ 1.120". OAL matters esepcially in the 9mm.

cole
09-07-2011, 10:59
Cole,

If you are using plated bullets, do you think those loads will be good with HSM bullets? I am using 124 HSM bullets but think I made a mistake by getting Magnum primers along with small pistol primers.

BC from KY

I can't speak to HSM bullets specifically as I've never reloaded 'em. However, I can say Unique is very forgiving (in terms of safety). Plated loads like lead and can be run a touch hotter safely. Thickness of plating can vary by brand and the more plating the more it will run like FMJ. For FMJ add more powder to get the same velocity. At about 5gr the Unique load will be compressed (more or less depending on OAL) but I don't worry too much about that unless I was hot doggin' the load. I'd venture ~5.2gr under an FMJ would be about right given my plated data. But, I'd still start low, work up and watch the OAL.

I seriously doubt you'll do any damage starting at the minimum charge. It might not cycle your gun though and could be dirty. Start with the max OAL (as long as it's within recommended specs) that will chamber in your gun then work up the charge and you'll be fine IMO. Fine tune OAL and charge to find what your gun(s) like, for accuracy and clean shooting.

Keep in mind a decrease in OAL can greatly increases pressure, especially in a low-volume case like 9mm. But, you surely know that. So, I tend to change one at a time. I like to start a load at the max OAL that will reliably chamber (plus a small buffer to allow for variance) unless I have LOTS of data that says otherwise. I'll shorten from there to tighten or clean things up. YMMV.

I mix-n-match SPPM and SPP all the time and it has never mattered in Unique or any powder. Just don't hot dog, check your brass and you'll be fine.

Good luck.

Flipz
09-08-2011, 20:14
I've been loading MG 124gr RN FMJ's with 4.7gr's of Unique at 1.150. It's a soft load but they run great in all my 9mm's.

noylj
09-10-2011, 00:18
The good thing about the old Alliant powders is that they do not have any tendencies to spike pressures.
A compressed load of Unique is not a problem.
If you ever try Blue Dot, you will lots of compressed loads and high velocity.
Unique is about as nice a powder to reload as one can find, except it meters "indifferently" in many powder measures.
I like 5.0-5.2gn with a 121-124gn JHP--very accurate. I have gone up 59 6.2gn with no sign of over-pressure based on case expansion, feel, extractor throw, or primer appearance.

RRTX11
09-12-2011, 20:49
I've been loading MG 124gr RN FMJ's with 4.7gr's of Unique at 1.150. It's a soft load but they run great in all my 9mm's.

Glock 17 using 124 gr Rn MG FMJ.....4.5 grains felt great, did not feed reliably. 4.7 grains perfect, accurate, soft at 1.150 OAL in MY gun.

Flipz
09-13-2011, 21:44
Glock 17 using 124 gr Rn MG FMJ.....4.5 grains felt great, did not feed reliably. 4.7 grains perfect, accurate, soft at 1.150 OAL in MY gun.

Great minds think alike. That load runs great in my G17, G34, and P226 Elite. Now I'm about to start working on a 147gr subsonic load for when my SilencerCo Osprey 9mm gets approved. My MG 147gr CMJ'S should be here this week.