RMR 124gr MW.

[Dudedog]

Would it be easier/better for me to order Round Nose rather than Flat Point 124 gr. bullets from RMR? Typically I see a round nose or hollow point in loading data

All RN and HPs are not created equal so no help there really.
You should be fine with the MWs
I like the RMR MPRs a hair better but the MWs are great bullets.

 

[Chillydog]

Anybody have comments on WSF and/or WST with MWs or MPRs?

thank you

Gary

 

[Dudedog]

I really like WSF for 9mm.
My current match load is 4.4-4.5gr WSF with a 124 MPR
5" 9mm 1911, mixed range brass, S+B SP, charges as thrown after setting measure
String: 2
Date: 10/29/2017
Time: 10:45:05 AM
Grains: 124
Hi Vel: 1066
Low Vel: 1008
Ave Vel: 1038
Ext Spread: 58
Std Dev: 18
RMR 124 MPR JHP 4.4-4.5 WSF 1.08 5inch 1911 (about 4.45gr)
Velocity Power Factor Ft/Lbs
1016 125.984 284.191
1032 127.968 293.213
1027 127.348 290.378
1044 129.456 300.071
1042 129.208 298.923
1053 130.572 305.267
1056 130.944 307.009
1008 124.992 279.733 hmm maybe a little light on the charge on this one??
1044 129.456 300.071
1066 132.184 312.851

5.0gr shorter OAL
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

4.9 with the MW
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

4.7gr WSF with the MW
String: 2
Date: 10/29/2017
Time: 10:46:10 AM
Grains: 124
Hi Vel: 1066
Low Vel: 1027
Ave Vel: 1047
Ext Spread: 39
Std Dev: 12.7
RMR 124 FN-FMJ 4.7 WSF 1.08
Velocity Power Factor Ft/Lbs
1032 127.968 293.213
1027 127.348 290.378
1044 129.456 300.071
1042 129.208 298.923
1053 130.572 305.267
1056 130.944 307.009
1044 129.456 300.071
1066 132.184 312.851

Hope this helps

 

[Chillydog]

Thanks Dudedog! Good info there.

 

[Dudedog]

Your Welcome, glad to help

 

[rayw1128]

Any information on loads of 124 gr RMR MWs or MPRs with Sport Pistol?

Figured out a load for 115 plated Extreme with Sport Pistol, but just bout some RMR 124 to try out... would appreciate if anyone can provide some guidance.

 

[Dudedog]

Some chrono data with the MPR and Sport Pistol
5" 9mm 1911, S+B SP, mixed range brass, charges as thrown after setting measure
String: 2
Date: 8/26/2018
Time: 11:19:12 AM
Grains: 124
Hi Vel: 1059
Low Vel: 1021
Ave Vel: 1037
Ext Spread: 38
Std Dev: 13
4.2 Sport Pistol 124 RMR MPR JHP 1.08
Velocity Power Factor Ft/Lbs
1059 131.316 308.756
1033 128.092 293.781
1040 128.96 297.776
1036 128.464 295.49
1021 126.604 286.995


String: 4
Date: 8/26/2018
Time: 11:14:49 AM
Grains: 124
Hi Vel: 987
Low Vel: 967
Ave Vel: 981
Ext Spread: 20
Std Dev: 8
3.9 Sport Pistol 124 RMR MPR JHP 1.08 (Does not make 125 PF!)
Velocity Power Factor Ft/Lbs
984 122.016 266.571
981 121.644 264.948
986 122.264 267.656
987 122.388 268.199
967 119.908 257.44


Alliant data MAX loads shown reduce 10% to start

 

[bullseye308]

Not RMR bullets, but they shoot almost this good out of my 1911. Need to order a few thousand of the mpr’s and see how they do. That hole is .72”, my best yet.

 

[Axis II]

Need to load up about 200-300rds. How do you guys feel about this load and groups? Just wondering should I do more testing or call them good to go?

 

[Blue68f100]

Only you can decide if it's good enough for your needs. Some of us are constantly testing trying to find something better than what we currently have. I'm still working on my RMR 69gr loads. Going to use it to replace SMK 65gr SP I've been using. Jake says these bullets are designed to expand so they will make a good varmint round.

 

[Hugger-4641]

As someone who has been loading for over 3 decades, I can tell you that rifle, pistol and shotgun results suck when velocities are pushed hard as opposed to going slower.

This is true if your load is not in an accuracy node for the charge and seat depth. Not true if you do find a node for the given charge.

 

[RashQuestion]

Great information contained here!!! Thanks for all who contributed!!! Great Read!!!

I'm an RMR fan using True Blue & Sport Pistol!!!