9mm Load for STI

[12glocks]

12 hours ago, adamastergunner said:

12glocks you plan on keeping everything the same but just change powder?

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Yes I have already done the load development and I am going up 1/10th of a grain on the SP.  N320 is a fabulous propellant but its expensive.  Sport Pistol meters a little better and I think it's a little more accurate.  I had a small POI shift up.  I am using Sport Pistol for 40 and it shoots soft as well (I use 180's).

[adamastergunner]

So that would be 3.5gn of sport pistol correct 12glocks?

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[4n2t0]

Not my data but I thought it might help...

 

MBC 135gr LRN
Brass:  RWS
Powder:  Alliant Sport Pistol
Primer:  Remington 1-1/2
OAL:  1.130"

Load      Avg Vel           SD
3.2gr         897              14
3.3gr         920              12
3.4gr         934              10
3.5gr         949              10
3.6gr         974                8

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RMR 135gr FN MW
4.0 grains Alliant Sport Pistol
OAL 1.130

Average: 969 ft/s
SD: 7 ft/s
Min: 957 ft/s
Max: 980 ft/s
Spread: 23 ft/s
Power Factor Average: 130
Power Factor Low: 129
Power Factor High: 132

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Xtreme 135gr HP
CCI SPP/WIN
OAL - 1.08"

4.2gr. Alliant Sport Pistol
# FPS
9 1035
8 1049
7 1046
6 1041
5 1043
4 1046
3 1036
2 1050
1 1031
Average: 1041.9 FPS
SD: 6.6 FPS
Min: 1031 FPS
Max: 1050 FPS
Spread: 19 FPS

4.1gr. Alliant Sport Pistol
# FPS
10 1026
9 1034
8 1036
7 1036
6 1044
5 1044
4 1037
3 1035
2 1047
1 1032
Average: 1037.1 FPS
SD: 6.3 FPS
Min: 1026 FPS
Max: 1047 FPS
Spread: 21 FPS

3.9gr. Alliant Sport Pistol
# FPS
10 990
9 996
8 986
7 1004
6 997
5 999
4 984
3 993
2 988
1 989
Average: 992.6 FPS
SD: 6.3 FPS
Min: 984 FPS
Max: 1004 FPS
Spread: 20 FPS

 

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135gr BBI HITEK 
3.6gr Alliant Sport Pistol
1.120 COAL Win SPP

#          FPS  FT-LBS      PF
10    990      293.85  133.65  
9    982      289.12  132.57  
8    992      295.03  133.92  
7    995      296.82  134.32  
6    993      295.63  134.05  
5    982      289.12  132.57  
4    991      294.44  133.79  
3    989      293.25  133.51  
2    992      295.03  133.92  
1    982      289.12  132.57  
Average: 988.8 FPS
SD: 5.0 FPS
Min: 982 FPS
Max: 995 FPS
Spread: 13 FPS

 

135gr BBI HITEK 
3.7gr Alliant Sport Pistol
1.120 COAL Win SPP

#          FPS  FT-LBS      PF
10    1017    310.09  137.29  
9    1019    311.31  137.57  
8    1013    307.66  136.76  
7    1018    310.70  137.43  
6    1022    313.15  137.97  
5    1008    304.63  136.08  
4    1003    301.61  135.40  
3    1024    314.38  138.24  
2    1008    304.63  136.08  
1    1003    301.61  135.40  
Average: 1013.5 FPS
SD: 7.6 FPS
Min: 1003 FPS
Max: 1024 FPS
Spread: 21 FPS
 

 

Edited January 11, 2020 by 4n2t0

[12glocks]

2 hours ago, 12glocks said:

Yes I have already done the load development and I am going up 1/10th of a grain on the SP.  N320 is a fabulous propellant but its expensive.  Sport Pistol meters a little better and I think it's a little more accurate.  I had a small POI shift up.  I am using Sport Pistol for 40 and it shoots soft as well (I use 180's).

 

Yes that is correct at a 1.145 COL which is longer than a lot of people load.  My velocities are always lower than most posted velocities on this forum, and I live in the mountains.  I got between 880-905 (12 feet behind the chrono) depending on the gun.  I am igniting the propellant with Federal 100's.  The load data listed on Aliants website has much shorter COL's than mine and I have considered shortening the round to 1.135.  BUT, we have run about 25K of this COL and it runs super well in Glocks and STI's (well I have one STI that needs a little tuning now shocker).

[adamastergunner]

Wanted to ask the group if the load and OAL provided by DD78 on the first page would change if I went from playyed 147gn bullet to 147gn FMJ from RMR? I want the same PF. Thanks again for all the information.

Edited February 13, 2020 by adamastergunner

[ddc]

20 minutes ago, adamastergunner said:

Wanted to ask the group if the load and OAL provided by DD78 on the first page would change if I went from playyed 147gn bullet to 147gn FMJ from RMR? I want the same PF. Thanks again for all the information.

 

I'd start off with the DD78 load and check it out with a chrono and assume you are going to have to add a bit to go from plated to jacketed at the same bullet weight to get the same velocity.

 

Off the top of my head I would guess that very approximately you would need very approximately about 0.2 grains more. (very approximately)

 

 

Edited February 13, 2020 by ddc

[HOGRIDER]

On 12/5/2019 at 11:25 PM, RangerTrace said:

My favorite and most accurate 9mm minor load is 3.5 grains of N320, under a 147 grain, Zero JHP loaded to 1.125".  Makes 133 PF all day long out of 4.15" barrels.  And is so soft it feels like cheating...

Trace:

Thanks for sharing your load information! 

I've got ~5k of the Zero 147g JHP  and want to develop an accurate load for, primarily, my '19 Stac P.   Of course, I've got plenty of N320. 

This will definitely prove useful!   

Anxiously waiting for an RL1100.......

Thanks again.

 

 

 

[4n2t0]

22 hours ago, adamastergunner said:

Wanted to ask the group if the load and OAL provided by DD78 on the first page would change if I went from playyed 147gn bullet to 147gn FMJ from RMR? I want the same PF. Thanks again for all the information.

 

OAL always change depending on the bullet/barrel combo. Never use OAL's found in manuals or provided by another user, always determine your own.