Need 7mm Dakota load with 175 SGK

[elmer deer]

Hi does anyone have any loads for the 7mm Dakota using 175 sierra game kings? I have Imr 7828, Retumbo, RL-25, Rl-22, on hand.
Thanks
Elmer

 

[FOTIS]

Start at 58 gr of rl22 and work up.

 

[wingnut]

7mm Dakota:

Start at 76 grains of Retumbo and work up. 8)

ETA: Pop, don't you mean about 68 grains of RL-22?

 

[R Flowers]

Elmer, there just does not seem to be a lot of data out there for the 7mm Dakota.

I looked in any number of manuals and Hornady is the only one I see that has the 7mm Dakota in its books. I see no reason you could not use the data for the 175 grain Hornady so long as you start low and work up.
They have data for most of the powders you have on hand. I imagine that RL 22 or RL 25 would work fine.

If you do not have the Hornady data let me know, I will post it on here.

The Hornady data tops out at 3000 fps for maximum loads with the 175 grain bullets.

 

[elmer deer]

Elmer, there just does not seem to be a lot of data out there for the 7mm Dakota.

I looked in any number of manuals and Hornady is the only one I see that has the 7mm Dakota in its books. I see no reason you could not use the data for the 175 grain Hornady so long as you start low and work up.
They have data for most of the powders you have on hand. I imagine that RL 22 or RL 25 would work fine.

If you do not have the Hornady data let me know, I will post it on here.

The Hornady data tops out at 3000 fps for maximum loads with the 175 grain bullets.

I have the data, I was just being cautious.
Thank you for your help!
Elmer

 

[FOTIS]

7mm Dakota:



ETA: Pop, don't you mean about 68 grains of RL-22?

Not really see below. I was being conservative. Quickload lists a max of around 60K.

Cartridge : 7 mm Dakota
Bullet : .284, 175, Sierra SPBT 1940
Cartridge O.A.L. L6: 3.330 inch or 84.58 mm
Barrel Length : 26.0 inch or 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.

Matching Maximum Pressure: 60000 psi, or 413 MPa

or a maximum loading ratio or filling of 110 %

These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ADI AR 2218 104.8 83.3 5.40 3132 99.1 60000 15454 1.285 ! Near Maximum !
Vihtavuori N570 100.5 79.1 5.12 3095 98.7 60000 15043 1.315 ! Near Maximum !
Hodgdon H870 106.7 82.2 5.33 3072 99.6 60000 14477 1.320 ! Near Maximum !
Hodgdon Retumbo 104.1 78.2 5.06 3054 100.0 60000 13051 1.307 ! Near Maximum !
Ramshot Magnum (Big Boy) 94.5 75.5 4.89 3023 100.0 60000 13124 1.314 ! Near Maximum !
PB Clermont PCL 517 94.8 75.6 4.90 3023 100.0 60000 13113 1.314 ! Near Maximum !
Norma MRP 2 99.5 74.3 4.81 3023 100.0 60000 13313 1.329 ! Near Maximum !
Vihtavuori N560 92.0 70.2 4.55 3022 99.9 60000 13391 1.315 ! Near Maximum !
SNPE Vectan SP 12 94.7 75.5 4.89 3021 100.0 60000 13080 1.315 ! Near Maximum !
Accurate MAGPRO 92.3 73.3 4.75 3019 99.5 60000 13615 1.323 ! Near Maximum !
IMR 7828 SSC 91.0 69.8 4.52 3012 100.0 60000 12947 1.305 ! Near Maximum !
IMR 7828 96.2 69.8 4.52 3012 100.0 60000 12947 1.305 ! Near Maximum !
ADI AP 2214 96.1 74.5 4.83 3008 100.0 60000 12707 1.298 ! Near Maximum !
Norma MRP 90.1 70.2 4.55 3008 100.0 60000 12793 1.325 ! Near Maximum !
Hodgdon H1000 101.1 74.6 4.84 3006 100.0 60000 12673 1.298 ! Near Maximum !
Vihtavuori 24N41 103.5 82.3 5.34 3003 94.3 60000 13912 1.302 ! Near Maximum !
ADI AR 2213 92.2 69.6 4.51 3003 100.0 60000 12873 1.301 ! Near Maximum !
Alliant Reloder-25 97.3 72.2 4.68 3000 100.0 60000 12325 1.318 ! Near Maximum !
Hodgdon 50BMG 108.9 82.6 5.35 3000 90.7 60000 14226 1.311 ! Near Maximum !
Hodgdon US 869 108.7 86.4 5.60 2994 94.3 60000 13969 1.316 ! Near Maximum !
Alliant Reloder-22 92.2 69.6 4.51 2991 100.0 60000 12715 1.321 ! Near Maximum !
Bofors RP5/NP ~approximation 92.2 69.6 4.51 2991 100.0 60000 12715 1.321 ! Near Maximum !
Raufoss RA15 92.2 69.6 4.51 2991 100.0 60000 12715 1.321 ! Near Maximum !
Winchester WXR 94.7 70.0 4.53 2991 100.0 60000 12743 1.321 ! Near Maximum !
Rottweil R905 93.7 69.4 4.50 2972 99.9 60000 12621 1.318 ! Near Maximum !
SNPE Vectan SP 13 110.0 83.9 5.44 2969 97.8 58383 13545 1.343 ! Near Maximum !
Vihtavuori 20N29 110.0 88.4 5.73 2966 95.9 56811 14009 1.357 ! Near Maximum !
ADI AR 2209 89.3 66.4 4.30 2959 100.0 60000 12122 1.305 ! Near Maximum !
Alliant Reloder-19 89.7 67.0 4.34 2955 100.0 60000 12169 1.312 ! Near Maximum !
Bofors RP14 ~approximation 90.4 67.5 4.38 2949 100.0 60000 12092 1.313 ! Near Maximum !
Vihtavuori N170 103.9 76.7 4.97 2946 97.5 60000 12947 1.331 ! Near Maximum !
Hodgdon H4831 SC 91.2 68.9 4.46 2945 99.8 60000 12249 1.309 ! Near Maximum !
Hodgdon H4831 94.9 68.9 4.46 2945 99.8 60000 12249 1.309 ! Near Maximum !
Winchester 760 80.7 63.8 4.13 2937 100.0 60000 11695 1.320 ! Near Maximum !
Norma 204 85.4 65.8 4.27 2937 100.0 60000 11908 1.311 ! Near Maximum !
Raufoss RA4 88.2 65.8 4.27 2937 100.0 60000 11908 1.311 ! Near Maximum !
Bofors RP4 ~approximation 88.2 65.8 4.27 2937 100.0 60000 11908 1.311 ! Near Maximum !
Ramshot Hunter 85.5 65.9 4.27 2934 100.0 60000 11644 1.322 ! Near Maximum !
Hodgdon H4350 85.3 63.4 4.11 2932 100.0 60000 11483 1.314 ! Near Maximum !
Lovex-D1001 101.2 81.3 5.27 2929 94.8 60000 12841 1.320 ! Near Maximum !
IMR 4350 87.6 62.6 4.06 2927 100.0 60000 11463 1.315 ! Near Maximum !
Hodgdon H414 79.0 62.8 4.07 2920 100.0 60000 11547 1.324 ! Near Maximum !
Rottweil R904 89.2 65.6 4.25 2918 100.0 60000 11745 1.310 ! Near Maximum !
Winchester Supreme 780 89.0 70.0 4.54 2914 100.0 60000 11636 1.321 ! Near Maximum !
Somchem S385 89.9 67.8 4.40 2914 100.0 60000 11567 1.335 ! Near Maximum !
PB Clermont PCL 513/520/9520 110.0 83.9 5.44 2911 96.1 54657 13466 1.382 ! Near Maximum !
Alliant Reloder-17 78.7 61.6 3.99 2908 100.0 60000 11003 1.311 ! Near Maximum !
Vihtavuori N550 82.7 63.1 4.09 2907 100.0 60000 11290 1.331 ! Near Maximum !
Norma URP 85.1 62.8 4.07 2905 100.0 60000 11155 1.328 ! Near Maximum !
Bofors RP19 ~approximation 85.1 62.8 4.07 2905 100.0 60000 11152 1.328 ! Near Maximum !
Vihtavuori N165 94.8 70.0 4.54 2904 100.0 60000 11356 1.326 ! Near Maximum !
Accurate 8700 110.0 84.1 5.45 2903 97.1 52694 13396 1.387
Vihtavuori N160 95.2 68.2 4.42 2902 100.0 60000 11552 1.314 ! Near Maximum !
Accurate 4350 88.0 62.8 4.07 2898 100.0 60000 11100 1.349 ! Near Maximum !
Accurate 3100 97.9 69.1 4.48 2891 100.0 60000 11191 1.355 ! Near Maximum !
Somchem S365 86.2 64.0 4.15 2891 100.0 60000 10804 1.342 ! Near Maximum !
Lovex-S0701 85.3 63.0 4.08 2889 100.0 60000 11157 1.330 ! Near Maximum !
IMR 4831 89.2 63.8 4.13 2886 100.0 60000 10918 1.338 ! Near Maximum !
Ramshot BigGame 79.4 61.2 3.97 2880 100.0 60000 10775 1.325 ! Near Maximum !
Rottweil R907 83.8 61.4 3.98 2880 100.0 60000 11064 1.320 ! Near Maximum !
IMR 4007 SSC 81.2 61.5 3.98 2879 100.0 60000 11057 1.320 ! Near Maximum !
SNPE Vectan SP 11 79.6 61.3 3.98 2879 100.0 60000 10761 1.325 ! Near Maximum !
Hodgdon H380 79.0 60.3 3.91 2873 100.0 60000 10811 1.330 ! Near Maximum !
Raufoss RA11 77.6 58.0 3.76 2869 100.0 60000 10648 1.326 ! Near Maximum !



-------------------------------------------RL22-------------------



Cartridge : 7 mm Dakota
Bullet : .284, 175, Sierra SPBT 1940
Cartridge O.A.L. L6: 3.330 inch or 84.58 mm
Barrel Length : 26.0 inch or 660.4 mm
Powder : Alliant Reloder-22

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.754% 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

-17.5 74 56.07 2447 2326 32934 10702 96.0 1.738
-15.8 76 57.26 2496 2421 34758 10948 96.8 1.702
-14.0 77 58.46 2545 2517 36675 11182 97.5 1.667
-12.3 79 59.65 2594 2615 38688 11404 98.1 1.626
-10.5 81 60.84 2643 2714 40802 11613 98.6 1.584
-08.8 82 62.04 2691 2815 43022 11809 99.0 1.545
-07.0 84 63.23 2739 2916 45352 11991 99.4 1.506
-05.3 85 64.42 2787 3019 47799 12158 99.7 1.469
-03.5 87 65.61 2835 3123 50369 12309 99.9 1.433
-01.8 89 66.81 2882 3227 53067 12445 100.0 1.399 ! Near Maximum !
+00.0 90 68.00 2928 3332 55902 12564 100.0 1.365 ! Near Maximum !
+01.8 92 69.19 2975 3439 58879 12675 100.0 1.333 ! Near Maximum !
+03.5 93 70.39 3021 3545 62008 12784 100.0 1.301 !DANGEROUS LOAD-DO NOT USE!
+05.3 95 71.58 3066 3653 65297 12890 100.0 1.271 !DANGEROUS LOAD-DO NOT USE!
+07.0 96 72.77 3111 3761 68756 12994 100.0 1.241 !DANGEROUS LOAD-DO NOT USE!
+08.8 98 73.96 3156 3869 72394 13096 100.0 1.213 !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 90 68.00 3040 3590 66511 12134 100.0 1.266 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 90 68.00 2764 2968 45390 12684 97.3 1.498

 

[wingnut]

"Not really see below. I was being conservative. Quickload lists a max of around 60K."

Therefore, you suggested a load starting ~35K psi, ~76.5% fill and speed ~2520 fps? I agree that's conservative, way conservative. Some might even think explosive with slow powders since it is ~16% grains below max.

At first I thought you misread the question and recommended a 7mm Remmag load. :shock: But even that is ~42.2K psi according to QL.

BTW, I'm not trying to pick a fight. Just wondering/saying.