Dacsoft Posted May 7, 2010 Share Posted May 7, 2010 I just purchased some Montana Gold 9mm 124 Gr CMJ bullets. I should have checked my load data before ordering. I can't find any official load data for the 9mm 124 gr CMJ with Hodgdon Titegroup power. Hodgdon shows a range of 4.1 to 4.4 for the 125 Gr SIE FMJ. Speer lists 4.1 to 4.4 for Speer TMJ RN, UCSP or GDHP I loaded up 10 at 4.1, 4.2, and 4.3. Now I am second guessing myself. How does the CMJ compare to FMJ bullets? Is it safe to use the same range or should I be starting with a different load. Does anybody have a tested load for this combination? Thank you in advance. Dacsoft Link to comment Share on other sites More sharing options...
jgedmond Posted May 7, 2010 Share Posted May 7, 2010 I recently chrono'ed 4.0 and 4.2 TG with MG 124 CMJ using WIN brass and CCI #500 SPP loaded to 1.150". Shot 5 round groups from an HK P30 (3.85" barrel). 4.0 TG: 1043 fps 12 SD 29 ES 1053 HI 1024 LO 4.2 TG: 1065 fps 3 SD 10 ES 1070 HI 1060 LO Link to comment Share on other sites More sharing options...
G-ManBart Posted May 7, 2010 Share Posted May 7, 2010 I just purchased some Montana Gold 9mm 124 Gr CMJ bullets. I should have checked my load data before ordering. I can't find any official load data for the 9mm 124 gr CMJ with Hodgdon Titegroup power. Hodgdon shows a range of 4.1 to 4.4 for the 125 Gr SIE FMJ. Speer lists 4.1 to 4.4 for Speer TMJ RN, UCSP or GDHP I loaded up 10 at 4.1, 4.2, and 4.3. Now I am second guessing myself. How does the CMJ compare to FMJ bullets? Is it safe to use the same range or should I be starting with a different load. Does anybody have a tested load for this combination? Thank you in advance. Dacsoft I don't have any of those Sierra FMJs to compare, but it's the same basic style, shape and weight, so you're in the right ballpark. If two bullets of the same (or very close) bullet weights take up the same amount of case volume (where the bottom of the bullet is in the case), they're going to give you similar pressures. It won't be exact because one will seal better than the other and they'll likely have slightly different jacket material, but it's not going to be the amount of difference you'd need to hurt anything or push a safe load into the danger zone. R, Link to comment Share on other sites More sharing options...
Sarge Posted May 7, 2010 Share Posted May 7, 2010 All those 4.1-4.3 numbers are fine with the 124 CMJ's you have. They will probably be a little slow cause thats just how MG's roll. Link to comment Share on other sites More sharing options...
Dacsoft Posted May 8, 2010 Author Share Posted May 8, 2010 Thanks guys. I will get to the range tomorrow and check these out and see how they perform in my XDm. I guess it is time to start looking around for chronograph. Link to comment Share on other sites More sharing options...
Dacsoft Posted May 31, 2010 Author Share Posted May 31, 2010 (edited) I took some loads and chronograph to the range for some testing. Here are my results when using 124gr Montana Gold CMJ RN bullets: 4.15 grains Titegroup: Hi: 1105 Low: 1049 Ave: 1069 Velocity Power Factor Ft/Lbs 1105 127.075 311.763 1072 123.28 293.42 1049 120.635 280.964 1084 124.66 300.025 1050 120.75 281.5 1070 123.05 292.326 1059 121.785 286.346 1065 122.475 289.6 1063 122.245 288.513 1081 124.315 298.367 4.3 grains Titegroup: Hi: 1173 Low: 1140 Ave: 1152 Velocity Power Factor Ft/Lbs 1142 141.608 359.05 1155 143.22 367.272 1153 142.972 366.001 1164 144.336 373.018 1173 145.452 378.808 1156 143.344 367.908 1140 141.36 357.794 1148 142.352 362.833 1141 141.484 358.422 Edited to remove mis-statement Edited May 31, 2010 by Dacsoft Link to comment Share on other sites More sharing options...
G-ManBart Posted May 31, 2010 Share Posted May 31, 2010 I was surprised to see the average velocity actually go down for the higher load. Unless you had a typo in there, it actually went up quite a bit Link to comment Share on other sites More sharing options...
Paul Burtchell Posted May 31, 2010 Share Posted May 31, 2010 4.0 grains of Titegroup with a 124 MG CMJ seated at 1.120, Federal Small Pistol Primers chrono'd at a 132 PF in my STI Spartan 9. Several of my shooting friends have had almost the exact same PF with M&P Pro's with the same load with slightly different OAL's. Link to comment Share on other sites More sharing options...
Dacsoft Posted May 31, 2010 Author Share Posted May 31, 2010 Unless you had a typo in there, it actually went up quite a bit Like duh I was looking at the last 2 numbers and not the entire number. Thanks for the correction. Now it makes more sense. Link to comment Share on other sites More sharing options...
CZinSC Posted May 31, 2010 Share Posted May 31, 2010 Ironic timing on this post. I was going to ask a similar question. I'm just starting to reload, and purchased Titegroup, and have 1K of MG 124 JHP on the way. I don't see any official data on this combo. I see a lot of posts where people say what their recipe is, but my question is, when you come upon a lack of "official" data, how do you proceed? I gather trusting someone else's data is not 100% smart, so where do you start? Link to comment Share on other sites More sharing options...
G-ManBart Posted May 31, 2010 Share Posted May 31, 2010 Ironic timing on this post. I was going to ask a similar question. I'm just starting to reload, and purchased Titegroup, and have 1K of MG 124 JHP on the way. I don't see any official data on this combo. I see a lot of posts where people say what their recipe is, but my question is, when you come upon a lack of "official" data, how do you proceed? I gather trusting someone else's data is not 100% smart, so where do you start? Use data for the bullet that's closest in shape/size/style that you can find. For 9mm MG JHPs, Hornady XTP data is normally very close. R, Link to comment Share on other sites More sharing options...
Dacsoft Posted May 31, 2010 Author Share Posted May 31, 2010 Ironic timing on this post. I was going to ask a similar question. I'm just starting to reload, and purchased Titegroup, and have 1K of MG 124 JHP on the way. I don't see any official data on this combo. I see a lot of posts where people say what their recipe is, but my question is, when you come upon a lack of "official" data, how do you proceed? I gather trusting someone else's data is not 100% smart, so where do you start? I had the same problem. I started by finding a lot of recommendations on the web and comparing that to the different data load sources available. I had the standard books, but find that many of the manufacturers give information on their web site and sometimes on the containers. For the 124 grain FMJ and CMJ I found everything from 4.0 to 4.5 recommendations. I started with 4.0 and worked up to 4.3. Link to comment Share on other sites More sharing options...
njl Posted May 31, 2010 Share Posted May 31, 2010 I took some loads and chronograph to the range for some testing. Here are my results when using 124gr Montana Gold CMJ RN bullets: 4.15 grains Titegroup: Hi: 1105 Low: 1049 Ave: 1069 Velocity Power Factor Ft/Lbs 1105 127.075 311.763 1072 123.28 293.42 1049 120.635 280.964 1084 124.66 300.025 1050 120.75 281.5 1070 123.05 292.326 1059 121.785 286.346 1065 122.475 289.6 1063 122.245 288.513 1081 124.315 298.367 This data is messed up. The power factor column indicates 115gr bullets, but you said it was 124gr. I didn't bother checking the energy numbers. Link to comment Share on other sites More sharing options...
Dacsoft Posted June 1, 2010 Author Share Posted June 1, 2010 (edited) This data is messed up. The power factor column indicates 115gr bullets, but you said it was 124gr. I didn't bother checking the energy numbers. Good catch. I made a cut and paste error when I posted. The numbers were from my test of the 115 gr ammunition and taken directly from the chronograph. But I incorrectly posted it as 124 gr results. The second chart (marked as 4.3 grains Titegroup) is actually correct for 124 grain CMJ. Thanks for catching my mistake. Edited June 1, 2010 by Dacsoft Link to comment Share on other sites More sharing options...
njl Posted June 1, 2010 Share Posted June 1, 2010 This data is messed up. The power factor column indicates 115gr bullets, but you said it was 124gr. I didn't bother checking the energy numbers. Good catch. I made a cut and paste error when I posted. The numbers were from my test of the 115 gr ammunition and taken directly from the chronograph. But I incorrectly posted it as 124 gr results. The second chart (marked as 4.3 grains Titegroup) is actually correct for 124 grain CMJ. Thanks for catching my mistake. It was actually an easy catch. I've loaded and chrono'd MG 124gr CMJ to the 1050-1080 fps range, so I know that 124gr at those velocities is a PF of 130-134. Link to comment Share on other sites More sharing options...
470nitro Posted August 10, 2010 Share Posted August 10, 2010 (edited) I run 4.3gr TG behind a 124 CMJ also and my PF in a M&P Pro is about 138. However, my OAL is long at about 1.150". Edited August 10, 2010 by 470nitro Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now