WSF & RMR 124gr 9mm Load Data

JohnB-40

JohnB-40

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In town with the wife shopping,we stopped by my local Bi-Mart. I wandered over to the sports counter looking for primers and spotted a lone 1# of WSF on the shelf for $26. I have read good reports of this powder in 9mm and thought for the price,I would give it a try. When I was looking for data on line I found like WST,a lot of likes for this powder but hardly any available data. I have a quantity of RMR 124gr FMJ & MW conical FP and would like some advise on starter loads for said powder to start a ladder for these bullets. I understand it has a burn rate close to Unique and using that powder 4.5gr under a MW (1.085") amazingly accurate in all my 9mm but would like to use my powder dispenser instead of dippers and a 505.
 
WSF is my go to powder for the 9mm and a few others. I'm using 5.0 gr WSF @ 1.120" OAL with the 124gr RMR MW. Gives you a velocity of around 1170 fps out of my 5" 1911. I'm not in my shop where I could look up the range but if I recall max is somewhere around 5.2gr. Start at 4.6 gr and workup from there.

edit. I confirmed the load range of being 4.6 - 5.3 gr for the 124gr using WSF from my log spreadsheet
 
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JohnB-40 said:
WSF ... RMR 124gr FMJ & MW conical FP
Click to expand...
Plenty of load data at Hodgdon - https://www.hodgdonreloading.com/reloading-data-center
  • 9mm 124 gr Lead RN WSF COL 1.169" Start 4.0 gr (945 fps) - Max 4.7 gr (1,055 fps)
  • 9mm 124 gr FMJ WSF COL 1.169" Start 4.7 gr (1,015 fps) - Max 5.3 gr (1,115 fps)
  • 9mm 125 gr Sierra FMJ WSF COL 1.090" Start 4.6 gr (1,015 fps) - Max 5.3 gr (1,121 fps)
  • 9mm 125 gr Hornady HAP WSF COL 1.069" Start 4.3 gr (991 fps) - Max 5.0 gr (1,083 fps)
WSF is one of rare powders among moderately slower pistol powders that can produce accurate loads down towards mid-range load data (Another is BE-86) and I used it for USPSA major power factor 40S&W loads and also for duplicate factory JHP 9mm/40S&W loads for higher velocities it produced over more faster powders (In recent years replaced with BE-86).

I would reference 125 gr HAP load data for RMR MW FP bullets due to similarly deeper bullet seating depth that will be produced for initial start charge as you can always go higher. For similar bullet seating depth, you should start to achieve accuracy around mid to high range load data of 4.5 - 4.8 gr.

For FMJ, depending on the OAL you end up with for your barrel/pistol, around 5.0 gr should produce accurate load for 124 gr FMJ (I usually load 124 gr FMJ to 1.130" - 1.135" and slightly shorter 1.120" if I am squeezing out utmost accuracy).
 
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WSF is good stuff in 9mm!
I first tried it during the last powder shortage when I was buying anything I could find 9mm load data for.
Had to buy a 4lb jug and was thinking I hope it works out ok.
Now many lbs later (20ish) it is my favorite 9mm powder, works well from mid to high, but does give up some vel on top compared to some other powders.


Some Chrono data I have
5" 9mm 1911, S+B SP mixed range brass, charges as thrown after setting measure
(unless noted otherwise)



Not an RMR bullet but
String: 3
Date: 3/31/2017
Time: 3:53:36 PM
Grains: 100 (note: I typed this in wrong when saving the chrono data,should be 124)
Hi Vel: 1071
Low Vel: 1018
Ave Vel: 1043
Ext Spread: 53
Std Dev: 20
Montana Gold 124 JHP 1.09 OAL WSF 4.7
Velocity Power Factor Ft/Lbs
1030 127.72 235.546
1018 126.232 230.09
1056 130.944 247.588
1040 128.96 240.142
1071 132.804 254.672

Same bullet 5.0gr WSF
String: 5
Date: 3/31/2017
Time: 3:55:46 PM
Grains: 100 (note: I typed this in wrong when saving the chrono data,should be 124)
Hi Vel: 1091
Low Vel: 1065
Ave Vel: 1079
Ext Spread: 26
Std Dev: 9
Montana Gold 124 JHP 1.09 OAL WSF 5.0
Velocity Power Factor Ft/Lbs
1065 132.06 251.826
1091 135.284 264.272
1084 134.416 260.892
1081 134.044 259.45
1075 133.3 256.577

RMR MPR
String: 5
Date: 9/17/2017
Time: 11:24:26 AM
Grains: 124
Hi Vel: 1037
Low Vel: 1012
Ave Vel: 1021
Ext Spread: 25
Std Dev: 9
RMR MPR JHP 4.5 WSF 1.08
Velocity Power Factor Ft/Lbs
1021 126.604 286.995
1018 126.232 285.311
1012 125.488 281.958
1020 126.48 286.433
1037 128.588 296.061
(makes minor barely)

Short OAL test for a friend who had to load them short
String: 6
Date: 9/17/2017
Time: 11:30:58 AM
Grains: 124
Hi Vel: 1067
Low Vel: 1005
Ave Vel: 1041
Ext Spread: 62
Std Dev: 24
RMR MPR JHP 4.6 WSF 1.065
Velocity Power Factor Ft/Lbs
1034 128.216 294.35
1005 124.62 278.071
1043 129.332 299.497
1059 131.316 308.756
1067 132.308 313.438

String: 8
Date: 9/17/2017
Time: 11:33:50 AM
Grains: 124
Hi Vel: 1157
Low Vel: 1121
Ave Vel: 1139
Ext Spread: 36
Std Dev: 15
RMR MPR JHP 5.0 WSF 1.065
Velocity Power Factor Ft/Lbs
1153 142.972 366.001
1132 140.368 352.79
1157 143.468 368.545
1135 140.74 354.662
1121 139.004 345.967

RMR Matchwinner
String: 9
Date: 10/29/2017
Time: 9:05:20 AM
Grains: 124
Hi Vel: 1063
Low Vel: 997
Ave Vel: 1022
Ext Spread: 66
Std Dev: 25
RMR 124 FN-FMJ 4.4 WSF 1.08 Does not make PF-2
Velocity Power Factor Ft/Lbs
1063 131.812 311.093
997 123.628 273.661
1019 126.356 285.872
1008 124.992 279.733
1023 126.852 288.121

String: 1
Date: 10/29/2017
Time: 9:06:39 AM
Grains: 124
Hi Vel: 1112
Low Vel: 1038
Ave Vel: 1081
Ext Spread: 74
Std Dev: 31
RMR 124 FN-FMJ 4.7 WSF 1.08 5inch 1911
Velocity Power Factor Ft/Lbs
1112 137.888 340.434
1038 128.712 296.632 (this one skewed the SD/ES light charge?)
1082 134.168 322.313
1111 137.764 339.822
1062 131.688 310.508

String: 2
Date: 10/29/2017
Time: 9:08:18 AM
Grains: 124
Hi Vel: 1137
Low Vel: 1113
Ave Vel: 1125
Ext Spread: 24
Std Dev: 9
RMR 124 FN-FMJ 4.9 WSF 1.08 5inch 1911
Velocity Power Factor Ft/Lbs
1137 140.988 355.913
1117 138.508 343.502
1113 138.012 341.047
1130 140.12 351.544
1128 139.872 350.301

Same as above but out of my 3" XD subcompact - gave up about 43 fps
String: 4
Date: 10/29/2017
Time: 9:11:11 AM
Grains: 124
Hi Vel: 1111
Low Vel: 1049
Ave Vel: 1081
Ext Spread: 62
Std Dev: 26
RMR 124 FN-FMJ 4.9 WSF 1.08 3inch XD
Velocity Power Factor Ft/Lbs
1111 137.764 339.822
1099 136.276 332.521
1059 131.316 308.756
1087 134.788 325.299
1049 130.076 302.952

RMR in house RN
String: 2
Date: 5/14/2017
Time: 3:33:47 PM
Grains: 147
Hi Vel: 1040
Low Vel: 1018
Ave Vel: 1026
Ext Spread: 22
Std Dev: 8
RMR 124 In House FMJRN 4.5 WSF 1.123
Velocity Power Factor Ft/Lbs
1024 126.9 289
1028 127.4 291
1040 128.9 298
1018 126.2 285
1023 126.8 288

Most of the tests were looking for a minor PF load for USPSA, WSF is my go to powder for match loads since my 1911 really likes it.
 
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Oh and just for fun I loaded some 90gr HPs
Note this is not a listed load use at you own risk and work up to it.
String: 2
Date: 3/31/2017
Time: 2:48:30 PM
Grains: 90
Hi Vel: 1386
Low Vel: 1334
Ave Vel: 1363
Ext Spread: 52
Std Dev: 25
Sierra 90 1.05 5.9 WSF
Velocity Power Factor Ft/Lbs
1386 124.74 383.858
1383 124.47 382.198
1350 121.5 364.176
1334 120.06 355.595
one didn't read….
 
WSF data is hard to find without one of the older Winchester reloading pamphlets. It's main attributes are is meters like HP38/W231, which is to say beautifully. And it burns cleanly when you get into the 1030fps and faster loads.

Data from my CZ...

Powder: WSF
Bullet: Precision Delta 124gr JHP
OAL: 1.100"
Primer: Fed #100
Brass: Winchester
Strings: 10 rounds each
Pistol: CZ SP-01 Tacti-cool

4.0gr 920 fps avg
4.2gr 958
4.4gr 1004
4.6gr 1021
4.8gr 1049

SD's ranged from 11 to 13
Temp was 68F
Clear and low humidity
 
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I loaded 10 rounds each at 4.4,4.5 and 4.6gr (1.085),not too impressed with results. Fired from a Glock 48,not reasonable accuracy and `sooty casings. I'm going up a rung or two and see what what happens. I think things will improve as advised in replies,the answer is 4.8gr +. Just to make sure it wasn't me having a bad day,I fired a mag of 4.5gr of Unique with great results.
 
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