115 gr 9mm load for m-11 smg

[jmemmert]

Advice? 115 gr 9mm load for m-11 smg

Gun is an M11-9 with a Lage Slowfire upper. I am loading on a dillon 650, with dillon dies. Using x-treme 115 grain plated round nose. Titegroup for the powder. CCI 500 for the primers. I have read many guys on uzitalk are running 4 to 4.5 grains with berry's plated 115 RN with great success. They didn't mention COAL.

My loading manuals are calling for 3.7-4.3 for 115 gr Lead RN, with a COAL of 1.100. I am putting a very light crimp on, just enough to take away the bell. Chambers in all my 9mm barrels, as well as my dillon case gauge. I loaded up 10 at 3.7, and my smg is a single shot. So I bumped it to 4, and then finally up to 4.3, and it still doesn't run. Stovepipe after stovepipe, sometimes it will eject spent casing but then will send next round nose up, jamming the action. The mag runs flawlessly on factory loads. When I attach a suppressor, it runs perfect at 4.3. This load also runs in my glock and xd, burning pretty clean and not too snappy . I am seeing no signs of over pressure, and am wondering how much higher I could safely go to get it to run. I definitely don't want to do any damage to this gun. I don't have a chronograph ( I know I need one), What would you all suggest I do from here?

 

[opus1776]

jmemmert,

From Xtreme's website:

"Load Info:
- Our Copper Plated Bullets can be run at mid-range jacketed velocities or higher end lead velocities. We do not recommend velocities over 1500 FPS (Feet Per Second) and only a light taper crimp."



and from Hodgdon's website:

115 GR. LRN

Hodgdon

Titegroup

.356"

1.100"

3.9

1075

25,800 CUP

4.3

1151

30,500 CUP

115 GR. SPR GDHP

Hodgdon

Titegroup

.355"

1.125"

4.5

1135

29,500 CUP

4.8

1158

30,500 CUP

Also, if you can find someone with a chrono who will let you use it, that would help. (That or go and buy one of your own).....


Hope this helps.


======================================
"Nothing tastes as good as skinny feels" K. Moss
You can NEVER be too rich or too thin.
Life is not a journey, but a series of unplanned detours...
Perfection: is not a goal---it's a demanded expectation.

 

[BGDave]

It may be easier to get more reliable cycling and go sub-sonic by using a 147gr bullet. For what it's worth.

 

[Win52C]

It may be easier to get more reliable cycling and go sub-sonic by using a 147gr bullet. For what it's worth.

What at he said.

 

[30calmachinegunner]

Where are you at, you can come over and run them through my chrono, I have 3(I know I'm a hoarder)

 

[jmemmert]

I worked all the way up to 4.7 gr with no luck. Same results. Was so frustrated and ready to give up on titegroup.

So a few days ago I decided to try some more and give it one last shot. I loaded some more at 4.7 and 1.100. It ran about 15 rds! then jammed. Best it had done so so far by a long shot. It then ran the rest of the mag. I then Lengthened OAL out to 1.155, to match what Richard Lage himself is running in his with titegroup at 4.7 gr.

It ran 100% without a suppressor for about 300 rds out of multiple mags.

The only difference was that outside temp was about 35 instead of 10... I wasn't aware of titegroup being that temp sensitive. Or maybe the guns tolerances got too close in the cold temps? Could be that gun was warming up and running better after the first 15 rds?

 

[ctbreitwieser]

I don't mean to sound like "that guy". But please take extra precaution when loading for an open bolt with fixed firing pin. I had this happen to my m11 after what I can only presume was a squib load on Sunday.

 

[BGDave]

Hope no one was hurt. Thanks for the pictures.

 

[jmemmert]

I saw that on uzitalk. Man... I should make copies and hang them in front of the press just as a reminder.

 

[DIRTROAD]

Och that is scary, you can never be to careful