9mm and .45 Range test results

[Dudedog]

That Jell-dog was kind enough to send some bullets (9mm Xtreme 147s size .357 and .45 Xtreme 230 RN)for testing so here are some results from his PIF and also some results with the new RMR in house 124gr FMJs.

I didn't have time to do a ladder on the RMR 124s but used an "known" good load of 4.5grs of WSF.
This load normally give me 128-130 PF with the RMR Plated FNs so I thought it would be a good starting place. With the FMJs it barely made 125 PF but shot great.

The .45 load with the Xtreme 230 RNs and 4.7 of AA#2 shot well as did the load with 4.2gr using my normal .45 bullet the 230gr RMR plated RN.

First some vels
Citadel 1911 .45 5"
WIN LP
Mixed range brass

String: 1
Date: 5/14/2017
Time: 2:17:47 PM
Grains: 230
Hi Vel: 739
Low Vel: 728
Ave Vel: 736
Ext Spread: 11
Std Dev: 4
Xtreme 230 RN 4.7 AA2 1.233 OAl
Velocity Power Factor Ft/Lbs
737 169.51 277.373
739 169.97 278.881
737 169.51 277.373
739 169.97 278.881
728 167.44 270.64

String: 3
Date: 5/14/2017
Time: 2:20:09 PM
Grains: 230
Hi Vel: 770
Low Vel: 751
Ave Vel: 760
Ext Spread: 19
Std Dev: 9
Xtreme 230 RN 5.0 AA2 1.233 OAl
Velocity Power Factor Ft/Lbs
760 174.8 294.956
751 172.73 288.011
770 177.1 302.769
751 172.73 288.011
769 176.87 301.983

String: 4
Date: 5/14/2017
Time: 2:30:59 PM
Grains: 230
Hi Vel: 719
Low Vel: 684
Ave Vel: 699
Ext Spread: 35
Std Dev: 13
Xtreme 230 RN 4.7 HP38 1.233 OAL
Velocity Power Factor Ft/Lbs
704 161.92 253.09
719 165.37 263.99
684 157.32 238.914
696 160.08 247.371
693 159.39 245.243

String: 5
Date: 5/14/2017
Time: 2:34:54 PM
Grains: 230
Hi Vel: 757
Low Vel: 723
Ave Vel: 738
Ext Spread: 34
Std Dev: 12
Xtreme 230 RN HP5.038 1.233 OAL
Velocity Power Factor Ft/Lbs
741 170.43 280.392
757 174.11 292.632
735 169.05 275.87
736 169.28 276.621
723 166.29 266.935

String: 4
Date: 5/14/2017
Time: 1:54:27 PM
Grains: 230
Hi Vel: 723
Low Vel: 696
Ave Vel: 708
Ext Spread: 27
Std Dev: 10
RMR 230 4.2 Bullseye 1.21 OAl
Velocity Power Factor Ft/Lbs
723 166.29 266.935
713 163.99 259.602
696 160.08 247.371
703 161.69 252.371
708 162.84 255.974

****************************************

Springfield 1911 9mm 5"
S+B SP
Mixed range brass

String: 3
Date: 5/14/2017
Time: 3:14:21 PM
Grains: 147
Hi Vel: 870
Low Vel: 833
Ave Vel: 848
Ext Spread: 37
Std Dev: 19
XTREME 147gr R N .357 3.7gr CFE-P 1.133
Velocity Power Factor Ft/Lbs
834 122.598 227.013
869 127.743 246.467
833 122.451 226.469
870 127.89 247.034
836 122.892 228.103

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 FMJ 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

I was having an on off day, could shot a decent group then mess the next test up.
Shooting no rest two hand hold.

 

[Dudedog]

And one more

As a side note I think I like the cross hair targets with the dot in the center better than the diamonds I had been printing up in the past.

Note #2. I still have a bunch of .380 bullets I need to test, thanks to ArtofGolf, Duval, Jelldog and some others (memory access failure alarm goes off here...)for the .380 bullets. Everyone was nice enough to send them to me for testing.......months ago, well ok last year, and I just haven't gotten around to it yet. Sorry guys. I just wanted to say thanks again for the samples and I haven't forgotten them.

 

[hdwhit]

dudedog wrote:
I didn't have time to do a ladder on the RMR 124s but used an "known" good load of 4.5grs of WSF.

Okay, so you changed components but didn't start from scratch. Where else did you cut corners?

I assume that before the change your point of aim and point of impact were approximately the same. If so then the chage in components pushed your point of impact roughly 2 inches below and 1 inch to the left of your point of impact - at 7 yards.

So, let's say you're facing someone like me. My point of aim and point of impact are set for 25 yards. With your results, you would be not less than 8 inches below and 4 inches to the left of your target. You will almost certainly miss me entirely, yet on my first shot, I will almost certainly hit you.

Do the ladder.

And ascertain your point of aim and point of impact at various ranges.

 

[Walkalong]

As a side note I think I like the cross hair targets with the dot in the center better than the diamonds I had been printing up in the past.

I like simple, which also doesn't take much ink.

 

[Dudedog]

I usually do ladders of a given powder, and OAL tests and different powders as well that is why I mentioned that I do not do a ladder for the above quick test to point out that better results might have been obtained given some more work.
I plan on doing more testing with the RMR 124s using different powders, different charge weights and OAls. Since I want to make 125 PF and not a lot more I have a limited range I want to work in, another constraint, the chosen OAL must work in all my 9mm pistols. If I was just after the most accurate load I would run a range from start charge to MAX charge. I expected my first test load to fall in the 125-130 PF range which is what I am after. The bullets might shoot much better at 1100, 1150 or 1200 fps but that does not matter for the use I am after because I am not looking for a 140+ PF load. Same type of issue with a load that only makes 120 PF, it might shoot better but won't work for my needs. I may run a start to MAX ladder with a couple powders for the fun of it and I may not. What I am after is an accurate load that produces about 128 PF in the weather I normally have where I live. Other people may want the most accurate load and not have the same constraints that I have, they may be loading for one pistol and are not tied in to having to use an OAL that functions in 5 different pistols.

I expected to be off POA vs POI on the with the .45 loads. I have the gun sighted in for a different load. (and it is a fixed sight gun) POA was the center of the dot/diamond.
Also for those who care note that some of the .45 loads did not make 165 PF, I wasn't concerned with making 165 PF with them however.

Thanks for the targets Walkalong.