9mm Loads for 16" Carbine

[9mmepiphany]

I've been loading 9mm for a while now and I'm currently loading RMR 124gr MatchWinners loaded to 1.114" OAL over 3.6grs of Alliant E3 for my SIG P320 (3.9") and S&W M&P9 (4.5")...to make 130PF (~1050fps)

I was playing with a Ruger PC Carbine (16") and need to make 135PF.

The issue I'm having is that in order to pass the plunk test, I need to reduce OAL to 1.08"...the 135gr and 147gr need to be seated to the same OAL...and I'm not consistently getting over 1000fps. For a recent match, I had to resorted to some Xtreme 135gr plated bullets which I could load to 1.117" over 3.7grs of E3 (a little hot at > 1150fps)

I'm thinking of trying a slower powder and wondered if folks had any recommendations. I'll also be loading for a Lead Star and SIG MPX, both with 16" barrels, with a friend...his carbines need to be loaded to 1.130" OAL to feed reliably

I have BE-86, N320, WW 231, and Sport Pistol on hand

TIA

 

[Dudedog]

I like WSF.
It shoots well for me with the RMR 124gr MPRs.
I am only aiming for 125 PF so 4.4-4.5gr gives me 1030 ish out of a 5" 1911.
127-128PF
Looking at my chart E3 is pretty quick burn speed wise.
If N320 would give you the vel you need it would be my first choice of your 4.
Haven't done a lot with Sport Pistol but initial loads with a 124 MPR seemed promising.
Alliant has +P data for Sport pistol


Sport Pistol, N320 and W231 still may be a bit to fast, but it depends on how much you pickup from the longer barrel.
I would think BE86 should get you to PF with room to spare.

Very mixed range brass using a RMR 124 RN showing diff between 1.09 and 1.13
S+B SP, very mixed range brass, all charges as thrown after setting measure
String: 5
Date: 3/31/2017
Time: 2:59:36 PM
Grains: 124
Hi Vel: 1015
Low Vel: 977
Ave Vel: 998
Ext Spread: 38
Std Dev: 14
RMR 124 RN 4.5 BE86 1.09 OAL (shorter OAl picked up about 15 FPS)

Velocity Power Factor Ft/Lbs
1005 124.62 278.071
1015 125.86 283.632
1000 124 275.311
977 121.148 262.792
995 123.38 272.565


String: 3
Date: 3/31/2017
Time: 2:55:58 PM
Grains: 124
Hi Vel: 1012
Low Vel: 969
Ave Vel: 985
Ext Spread: 43
Std Dev: 17
RMR 124 RN 4.5 BE86 1.13 OAL
Velocity Power Factor Ft/Lbs
971 120.404 259.574
985 122.14 267.113
992 123.008 270.923
1012 125.488 281.958
969 120.156 258.506

(The above are under you target PF but I put them in to show what I got going from 1.13 to 1.09)

Same primer etc as above
String: 5
Date: 7/23/2017
Time: 10:30:36 AM
Grains: 124
Hi Vel: 1179
Low Vel: 1087
Ave Vel: 1132
Ext Spread: 92
Std Dev: 33
RMR 124 FN FMJ 5.4 BE86 1.09 OAL
Velocity Power Factor Ft/Lbs
1121 139.004 345.967
1143 141.732 359.68
1087 134.788 325.299 (this one really messed up the ES and SD, maybe a bit light charge wise?)
1134 140.616 354.038
1179 146.196 382.693

 

[9mmepiphany]

(The above are under you target PF but I put them in to show what I got going from 1.13 to 1.09)

This was very helpful

I like WSF.
It shoots well for me with the RMR 124gr MPRs.
I am only aiming for 125 PF so 4.4-4.5gr gives me 1030 ish out of a 5" 1911.
127-128PF

I have some WST way in the back of my cabinet...I'll bet I can trade it to a shooting buddy for some WSF.

I was loading 4.3grs of 231 for my 3.9" SIG 320 to make PF and it was making the higher PF out the carbine barrel...but it tended to be dirty (aside from being temp sensitive). Some guys were loading 147gr bullets over Titegroup for their handguns and had to bump their load up quite a bit to make PF

 

[Walkalong]

My N-320/124 Gr "plinker" load that makes 1050ish FPS from a 5" 1911 doesn't gain any speed in a 16" barrel. My WSF, True Blue, N340, AA #5 HS-6 etc 9MM/124 Gr loads gain an extra 150/200/sometimes a little more FPS in a 16" barrel.

I'll look up some numbers

 

[Texas10mm]

This was very helpful


I have some WST way in the back of my cabinet...I'll bet I can trade it to a shooting buddy for some WSF.

I was loading 4.3grs of 231 for my 3.9" SIG 320 to make PF and it was making the higher PF out the carbine barrel...but it tended to be dirty (aside from being temp sensitive). Some guys were loading 147gr bullets over Titegroup for their handguns and had to bump their load up quite a bit to make PF

WST is a great 9mm powder. Lots of people over at Brian Enos use it. I've loaded a bunch of it up. Works like a champ.