remingtonman_25_06
Handloader
- Nov 17, 2005
- 2,794
- 372
Got a 7 Rem Mag here, 24" barrel, and want to do a ladder with the 180g ELDM, H1000, Retumbo, and RL25. If anyone cares to run the QL on it, be much appreciated! Thanks.
7 Rem Mag QL please!
- Thread starter remingtonman_25_06
- Start date
HAWKEYESATX
Handloader
- Aug 15, 2016
- 1,805
- 63
Howdy!
You might find some of the info you need under the QL Request board.
Hope this helps.
Hawk
Sent from my REVVLRY+ using Tapatalk
You might find some of the info you need under the QL Request board.
Hope this helps.
Hawk
Sent from my REVVLRY+ using Tapatalk
I can't help you with quickload but if you search for my older posts, I've done some load work up in 7 rem mag with H1000. I believe there's even some quickload data in the post? My experience was that the manuals are quite a bit lower on their max loads than what I was able to go up to.
HAWKEYESATX
Handloader
- Aug 15, 2016
- 1,805
- 63
I have to agree with you about the reloading manuals being needlessly low on maximum load data.desertcj":1fgj6h1s said:
The 7mm Rem Mag is shot in the same made rifles that shoot the .300 Win Mag, and that has a higher max load rate than the 7mm Rem Mag.
Also, with the new magnum powders available on the market, the velocities can be upped quite well and stay around the low max loads of the 7mm Rem Mag.
Hawk
Sent from my REVVLRY+ using Tapatalk
DrMike
Ballistician
- Nov 8, 2006
- 36,924
- 5,115
remingtonman_25_06":19tl7kab said:
Code:
Cartridge : 7 mm Rem. Mag.(SAAMI)
Bullet : .284, 180, Hornady ELD-M 28503
Useable Case Capaci: 70.718 grain H2O = 4.592 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-25 *C
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-10.0 91 59.31 2597 2695 42795 11835 100.0 1.470
-09.0 92 59.97 2625 2754 44241 11907 100.0 1.447
-08.0 94 60.63 2653 2812 45736 11973 100.0 1.425
-07.0 95 61.29 2680 2871 47284 12038 100.0 1.403
-06.0 96 61.95 2708 2930 48886 12102 100.0 1.381
-05.0 97 62.61 2735 2989 50550 12166 100.0 1.360
-04.0 98 63.26 2762 3049 52272 12228 100.0 1.339 ! Near Maximum !
-03.0 99 63.92 2789 3109 54056 12290 100.0 1.319 ! Near Maximum !
-02.0 100 64.58 2816 3169 55905 12351 100.0 1.299 ! Near Maximum !
-01.0 101 65.24 2842 3229 57806 12411 100.0 1.280 ! Near Maximum !
+00.0 102 65.90 2869 3290 59810 12469 100.0 1.260 ! Near Maximum !
+01.0 103 66.56 2896 3351 61872 12527 100.0 1.241 !DANGEROUS LOAD-DO NOT USE!
+02.0 104 67.22 2922 3412 64012 12585 100.0 1.223 !DANGEROUS LOAD-DO NOT USE!
+03.0 105 67.88 2948 3474 66227 12641 100.0 1.205 !DANGEROUS LOAD-DO NOT USE!
+04.0 106 68.54 2974 3536 68514 12696 100.0 1.187 !DANGEROUS LOAD-DO NOT USE!
+05.0 107 69.20 3001 3599 70877 12750 100.0 1.170 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 102 65.90 2972 3531 73449 12031 100.0 1.164 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 65.90 2710 2935 47518 13009 99.4 1.389DrMike
Ballistician
- Nov 8, 2006
- 36,924
- 5,115
Code:
Cartridge : 7 mm Rem. Mag.(SAAMI)
Bullet : .284, 180, Hornady ELD-M 28503
Useable Case Capaci: 70.718 grain H2O = 4.592 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon Retumbo
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-10.0 98 64.17 2611 2724 41962 12603 99.5 1.476
-09.0 99 64.88 2642 2790 43467 12697 99.7 1.451
-08.0 100 65.60 2673 2857 45035 12782 99.9 1.426
-07.0 101 66.31 2705 2924 46659 12856 100.0 1.402
-06.0 102 67.02 2736 2991 48357 12920 100.0 1.379
-05.0 103 67.74 2767 3059 50119 12976 100.0 1.356
-04.0 104 68.45 2798 3128 51954 13029 100.0 1.333 ! Near Maximum !
-03.0 106 69.16 2828 3197 53848 13082 100.0 1.311 ! Near Maximum !
-02.0 107 69.87 2859 3266 55853 13133 100.0 1.289 ! Near Maximum !
-01.0 108 70.59 2889 3336 57927 13183 100.0 1.268 ! Near Maximum !
+00.0 109 71.30 2919 3406 60088 13232 100.0 1.247 ! Near Maximum !
+01.0 110 72.01 2949 3477 62341 13280 100.0 1.226 !DANGEROUS LOAD-DO NOT USE!
+02.0 111 72.73 2979 3548 64691 13326 100.0 1.206 !DANGEROUS LOAD-DO NOT USE!
+03.0 112 73.44 3009 3619 67147 13371 100.0 1.186 !DANGEROUS LOAD-DO NOT USE!
+04.0 113 74.15 3039 3691 69707 13414 100.0 1.166 !DANGEROUS LOAD-DO NOT USE!
+05.0 114 74.87 3069 3764 72384 13456 100.0 1.147 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 109 71.30 3043 3702 75224 12684 100.0 1.143 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 109 71.30 2726 2969 47596 13727 98.4 1.382DrMike
Ballistician
- Nov 8, 2006
- 36,924
- 5,115
Code:
Cartridge : 7 mm Rem. Mag.(SAAMI)
Bullet : .284, 180, Hornady ELD-M 28503
Useable Case Capaci: 70.718 grain H2O = 4.592 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon H1000 *T
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-10.0 95 61.02 2552 2602 42134 11799 97.0 1.468
-09.0 96 61.70 2582 2665 43619 11928 97.4 1.444
-08.0 97 62.38 2613 2729 45161 12050 97.8 1.420
-07.0 98 63.05 2644 2794 46763 12167 98.2 1.396
-06.0 99 63.73 2675 2860 48428 12277 98.5 1.373
-05.0 100 64.41 2706 2926 50159 12380 98.8 1.351
-04.0 101 65.09 2736 2993 51959 12476 99.1 1.329 ! Near Maximum !
-03.0 102 65.77 2767 3060 53830 12565 99.3 1.307 ! Near Maximum !
-02.0 103 66.44 2798 3128 55779 12647 99.5 1.286 ! Near Maximum !
-01.0 104 67.12 2828 3197 57806 12721 99.7 1.265 ! Near Maximum !
+00.0 105 67.80 2859 3267 59916 12787 99.8 1.244 ! Near Maximum !
+01.0 106 68.48 2889 3337 62121 12845 99.9 1.224 !DANGEROUS LOAD-DO NOT USE!
+02.0 107 69.16 2920 3407 64418 12895 100.0 1.204 !DANGEROUS LOAD-DO NOT USE!
+03.0 108 69.83 2950 3479 66813 12937 100.0 1.184 !DANGEROUS LOAD-DO NOT USE!
+04.0 109 70.51 2980 3550 69309 12973 100.0 1.165 !DANGEROUS LOAD-DO NOT USE!
+05.0 110 71.19 3011 3622 71918 13008 100.0 1.146 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 105 67.80 2988 3569 73392 12237 100.0 1.147 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 67.80 2669 2847 48331 12704 95.2 1.370- Thread starter
- #8
remingtonman_25_06
Handloader
- Nov 17, 2005
- 2,794
- 372
Thank you Dr Mike, I appreciate it!
flyingagg
Handloader
- Dec 16, 2019
- 443
- 452
Dr Mike, how do you pick the "center charge". For example the 67.80 for the H1000
flyingagg
Handloader
- Dec 16, 2019
- 443
- 452
So do you do a run just to get an idea then pick that crossover base charge or is there another way. I am trying to improve my knowledge of QL
You set the max psi desired for the simulation in QL. I would start your load development well below that. If you're just trying to find where you're going to run into pressure signs while shooting, I have loaded 1 round in .5 or 1 grain increments up to max and usually a few notches above. If you find ejector marks on the brass, excessively flattened or cratered primers then don't shoot any higher in your progression. If you get a sticky bolt, stop immediately and back down several grains!
The idea is to find accuracy, but if I'm not even close to the velocity I'm expecting than I don't waste any more time or components. Once I know where my true max load is, I back down a few grains and start shooting groups while working my way back up to my max established load.
The idea is to find accuracy, but if I'm not even close to the velocity I'm expecting than I don't waste any more time or components. Once I know where my true max load is, I back down a few grains and start shooting groups while working my way back up to my max established load.
DrMike
Ballistician
- Nov 8, 2006
- 36,924
- 5,115
The maximum chamber pressure for SAAMI standards is 61K psi. I set the upper chamber pressure to match the SAAMI standard, or adjust that upper pressure if deliberately choosing to go higher. Seldom does an increase in chamber pressure over SAAMI standards translate into significantly higher velocities, but there may be reason to make such a choice. Then, I run a "charge variation" simulation. I select the initial charge weight from years of experience and some understanding of the burn rate of the powder. Reviewing what is projected, I am able to suggest a maximum charge with that powder from the data base. I then run this charge. All this assumes that I have set all the parameters that must be set. Cartridge length, barrel length, MAP, and Maximum
Case Capacity are all preset, but all can be adjusted to your parameters. Measurement of the chamber, using deoxygenated water to measure for Maximum case capacity, and whatever other considerations are them plugged into the system and the data run. This is, of course, an abbreviated summation of what is required. Trust that is helpful.
Case Capacity are all preset, but all can be adjusted to your parameters. Measurement of the chamber, using deoxygenated water to measure for Maximum case capacity, and whatever other considerations are them plugged into the system and the data run. This is, of course, an abbreviated summation of what is required. Trust that is helpful.
flyingagg
Handloader
- Dec 16, 2019
- 443
- 452
Thanks Dr. Mike. I have played with QL for a long time, I pick SAAMI and don't mess with the MAP.
I was just curious how you selected the center powder.
Thanks again
I was just curious how you selected the center powder.
Thanks again
Joec7651
Handloader
- Apr 7, 2019
- 936
- 1,259
I’m getting 2961 fps from my 7mm RM with the 175gr ELD-X over 66.2 grains of RL25. The max safe load from the Hornady 10th Edition. No pressure signs in Federal brass using Federal LRM primers, 5R 1:8 rifled 26” bbl. I haven’t done any formal accuracy testing yet but it gave a hair less than an inch at 200 yards for 3 shots. This was shot at the end of the X-Caliber recommend break in for the new barrel, so the velocity may change a little. These are rounds 19-21 from the barrel. 
Joec7651
Handloader
- Apr 7, 2019
- 936
- 1,259
*REMEMBER* A safe max load with one powder lot can be transformed to a proof load with a different powder lot. **Always pay attention and work to a max load**
- Thread starter
- #17
remingtonman_25_06
Handloader
- Nov 17, 2005
- 2,794
- 372
QL was pretty dead on with H1000...69g is where I stopped and was getting 2928fps. Still working on it... Not sure the factory savage twist is enough to give the best accuracy. Shot 66-69 at 300 yards the last 2 mornings and been getting anywhere from 1-2 MOA. I'm going to try a few seated deeper tomorrow, and if that doesnt work, I'll be doing a ladder with Retumbo and RL25, hopefully they can do quite a bit better than H1000 from this rifle. Goal is 2" or better. Best so far was 68g yesterday, which gave me a 2.8" group at 2890fps. But then I tried 68g again this morning, just seated .010" longer and it went to a 7" group...Might be hard to read the target, but they're marked with the charge on each shot, the circled holes were from today, and the holes with cross Mark's were from yesterday. A lot of them are doing 2 and 1 out. And from looking at the target, it doesnt seem to like them close to the lands any...Yesterday I did 67-69g at .025" off and today I did 66-68g at .015" off.
Attachments
- Thread starter
- #19
remingtonman_25_06
Handloader
- Nov 17, 2005
- 2,794
- 372
I'm gonna have to drop down to the 162s. This 9.5 twist just isnt going to do it. I think the 162s will be a lot more consistent. So if anyone cares to run the QL with the 162 ELDM and H1000/Retumbo/RL25 thatd be great!!!
DrMike
Ballistician
- Nov 8, 2006
- 36,924
- 5,115
Code:
Cartridge : 7 mm Rem. Mag.(SAAMI)
Bullet : .284, 162, Hornady ELD-M 28403 G7
Useable Case Capaci: 72.063 grain H2O = 4.679 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon H1000 *T
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-10.0 97 63.45 2670 2564 42002 11946 95.5 1.405
-09.0 98 64.16 2703 2628 43514 12090 96.1 1.381
-08.0 99 64.86 2737 2694 45086 12228 96.6 1.358
-07.0 100 65.57 2770 2760 46723 12359 97.1 1.335
-06.0 101 66.27 2804 2827 48426 12483 97.5 1.312
-05.0 102 66.98 2837 2895 50199 12601 97.9 1.290
-04.0 103 67.68 2871 2964 52030 12712 98.3 1.268 ! Near Maximum !
-03.0 104 68.39 2904 3034 53971 12816 98.6 1.247 ! Near Maximum !
-02.0 105 69.09 2938 3104 55978 12911 98.9 1.226 ! Near Maximum !
-01.0 106 69.80 2971 3176 58069 12999 99.2 1.205 ! Near Maximum !
+00.0 107 70.50 3005 3248 60252 13079 99.4 1.185 ! Near Maximum !
+01.0 108 71.21 3038 3321 62531 13151 99.6 1.165 !DANGEROUS LOAD-DO NOT USE!
+02.0 109 71.91 3072 3394 64904 13213 99.8 1.146 !DANGEROUS LOAD-DO NOT USE!
+03.0 111 72.62 3105 3468 67396 13268 99.9 1.126 !DANGEROUS LOAD-DO NOT USE!
+04.0 112 73.32 3138 3543 69999 13313 100.0 1.107 !DANGEROUS LOAD-DO NOT USE!
+05.0 113 74.03 3172 3618 72718 13349 100.0 1.089 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 107 70.50 3152 3574 73736 12561 100.0 1.091 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 70.50 2794 2808 48665 12796 93.6 1.307
