9mm 124 RMR Jacketed Hollow Point *NEW*

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As I stated in the BE-86 thread, those results look great!

Hmmm, I do have some CFE Pistol, may have to try some with the 357sig and these bullets... Guess I need to order some bullets and load 'em up!
 
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:confused: Holes made by .357Sig ... and you are measuring these groups ... how? :scrutiny:
 
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:confused: Holes made by .357Sig ... and you are measuring these groups ... how? :scrutiny:

I use a caliper measuring edge to edge of the two holes furthest apart. It is easier for me to measure edge to edge instead of center to center. Following is one of the targets with a tape measure to show some scale. You can see it is just under 1.5" center to center, so the 1.45" is probably close to being accurate. Let me know if there is a better/more correct way to measure grouping.

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Thanks for the measuring tape pic, vaalpens, but that still didn't "look right" ... until I chewed on it for a moment.

And then I realized what was causing my problem ... LSWCs.

I have spent many months shooting varying-load test strings of .32-20 with LSWC (which leave crisp, clean ~.313" holes) and then carefully studying the accuracy results on multiple targets. I have done that so much that I have gotten quite good at glancing at the target and being able to closely estimate the group measurement.

You, otoh, are shooting jacketed HPs (DUH! :uhoh:) and the .355" bullets only produce holes (including the mashed perimeter) of ~.25".

That is why I looked at you pics and my brain said, "1.45"? No way!".

Sorry! :eek:
 
vallpens,
looking good on that BE86 group, nice shooting, 3 touching.
Thanks for the results.
Estimated vel for the loads?
I'm thinking they may be happier in 9mm if driven a bit faster than I did in my first tests.
 
Thanks for the measuring tape pic, vaalpens, but that still didn't "look right" ... until I chewed on it for a moment.

And then I realized what was causing my problem ... LSWCs.

I have spent many months shooting varying-load test strings of .32-20 with LSWC (which leave crisp, clean ~.313" holes) and then carefully studying the accuracy results on multiple targets. I have done that so much that I have gotten quite good at glancing at the target and being able to closely estimate the group measurement.

You, otoh, are shooting jacketed HPs (DUH! :uhoh:) and the .355" bullets only produce holes (including the mashed perimeter) of ~.25".

That is why I looked at you pics and my brain said, "1.45"? No way!".

Sorry! :eek:

Not a problem. At least it made me verify my measurements again.

This is one of the reasons I stopped shooting RN bullets a while ago. It was difficult to measure, so I prefer FP bullets if possible. The JHP bullets all have their own shape again, and the RMR JHP's have a sharper point, thus the smaller hole like the RN bullets.

This is also why I love shooting my 40S&W. They are FP's and bigger and better defined holes.
 
vallpens,
looking good on that BE86 group, nice shooting, 3 touching.
Thanks for the results.
Estimated vel for the loads?
I'm thinking they may be happier in 9mm if driven a bit faster than I did in my first tests.

I would guess at least 1286fps, but maybe a bit higher since these bullets are a bit longer and maybe I get higher pressure.

My plan is to get a chrono when things starts cooling down so that I can go out in the desert and start testing my loads using the chrono.

I also tested some 9mm loads with the RMR JHP's, but did not see acceptable groupings. You are possibly correct that driving the JHP's a bit faster will probably help.

The best BE-86 grouping was with my highest test load, so I am planning to test a few more with some increased powder. I am still below the Alliant 8.2gr max load data.
 
:eek: Not going to get close to those vels with 9mm, but I have some loaded up hotter to test this weekend.
I have loaded a lot of lead, coated and plated not as many jacketed so I am still trying to get a feel for what they want. Will post the results.
 
:eek: Not going to get close to those vels with 9mm, but I have some loaded up hotter to test this weekend.
I have loaded a lot of lead, coated and plated not as many jacketed so I am still trying to get a feel for what they want. Will post the results.

The "calculated" velocity is for 357sig, not 9mm.

I just loaded 50 yesterday for some off-hand shooting evaluation, and maybe keep a few as backup ;) defensive rounds.

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You mentioned .357 Sig in your earlier post so that's what I thought the numbers were for, just thinking how nice it would be to have those kind vels, hhhmmmm .357 Sig slide and barrel for my P226 maybe sometime in the future....
Had a chance to do a quick range test in 9mm today.
They do seem happier when pushed harder in 9mm.
I tested 5.0gr of CFE pistol (.1 below MAX), 4.7gr HP38 (.1 below MAX) and 4.7 WSF (.6 below MAX) (had worked up to those numbers with CFE and HP38 and was fine along the way but didn't load up very many for the first test)
All showed promise and the CFE and HP38 loads did not seem to show any excess pressure signs. I need to test WSF again at 4.7 and do some at 5 and maybe 5.2.
I will chrono these loads when I go to the outdoor range next time.
I think I will run more test round and then call it done, then get the rest of them loaded up for Zombies.:)

Indoor range, standing 7 yards, Springfield 1911 9mm 5", S+B primers, mixed range brass, some of which I know has been loaded at least 3 or 4 times.
The "fliers" were most likely caused by shooter error....:banghead:
 

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You mentioned .357 Sig in your earlier post so that's what I thought the numbers were for, just thinking how nice it would be to have those kind vels, hhhmmmm .357 Sig slide and barrel for my P226 maybe sometime in the future....
Had a chance to do a quick range test in 9mm today.
They do seem happier when pushed harder in 9mm.
I tested 5.0gr of CFE pistol (.1 below MAX), 4.7gr HP38 (.1 below MAX) and 4.7 WSF (.6 below MAX) (had worked up to those numbers with CFE and HP38 and was fine along the way but didn't load up very many for the first test)
All showed promise and the CFE and HP38 loads did not seem to show any excess pressure signs. I need to test WSF again at 4.7 and do some at 5 and maybe 5.2.
I will chrono these loads when I go to the outdoor range next time.
I think I will run more test round and then call it done, then get the rest of them loaded up for Zombies.:)

Indoor range, standing 7 yards, Springfield 1911 9mm 5", S+B primers, mixed range brass, some of which I know has been loaded at least 3 or 4 times.
The "fliers" were most likely caused by shooter error....:banghead:

Your shooting results are not that bad. With these expanding JHP's, I think you just need to decide what grouping you are looking for, and that should be good enough. You are not looking for bullseye results.

I have stated before that I am looking for sub 1.5" grouping at 15 yards. Once I reach less than 1.5", then I can use it for SD, also if my load proves to be reliable..
 
I agree, I am not after bullseye accuracy here. I just want to do one more round just to see what "feels" the best when shooting them in my different pistols.
Big difference in feel between my lighter XD subcompact and the full size all steel :) 1911. Now that I am close to having a load I need to check it in the XD as well. These will be "zombie" loads as I prefer Gold Dots or Golden Sabers for my primary SD loads. It is easier to afford having 500 of these loaded up for a Zombie attack than buying factor GD or GS which are close to $1 a round.
 
Has anybody worked with these RMR 124gr JHP beyond the reports in this thread? I know this has been stagnent for a while.
I have a bunch of them and am trying to decide what powder to use.
I am looking to make some full power loads.
I have
BE86
Power Pistol
Bullseye
Titegroup
HS6
Longshot
WSF

I normally use BE86 for my competition shooting 124gr plated, but am trying to decide the best powder to use on full tilt loads.
I will work up of course, just looking for input.
For a glock 17 and 34
 
I haven't used Longshot (or HS-6) with these but for MAX vels those 2 or BE86 probably the best bet.
WSF is close and has been more accurate for me.
 
Has anybody worked with these RMR 124gr JHP beyond the reports in this thread? I know this has been stagnent for a while.
I have a bunch of them and am trying to decide what powder to use.
I am looking to make some full power loads.
I have
BE86
Power Pistol
Bullseye
Titegroup
HS6
Longshot
WSF

I normally use BE86 for my competition shooting 124gr plated, but am trying to decide the best powder to use on full tilt loads.
I will work up of course, just looking for input.
For a glock 17 and 34

Of the ones you list, Power Pistol and BE86 would be my first choices to try. Longshot would probably be good for max velocity as well.
 
I have not done much testing in 9mm, but following is some chrono data that I have for this bullet:

SIG SP2022, 3.9", 9mm
COL: 1.100"
RMR, 124gr, JHP, BE86, 5.7gr, CCI500
Average: 1105
ES: 9
SD: 3.8
Force: 336
PF: 137
Velocities: 1103, 1103, 1112, 1106, 1104
1.41" grouping @ 15yards

SIG SP2022, 3.9", 9mm
COL: 1.100"
RMR, 124gr, JHP, Longshot, 5.5gr, CCI500
Average: 1085
ES: 25
SD: 10.2
Force: 324
PF: 134
Velocities: 1093, 1071, 1088, 1096, 1080
1.78" grouping @ 15yards
 
Thanks guys. I'll stick to BE86. I have about 15lbs of it left.
I did work up to 5.6gr with FMJ 124gr projos and no signs of pressure.
I'll probably do a small run starting at 5.2gr and work up from there.
 
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