300 WSM QL request for 200 gr ELD-X

BossGobbler · May 15, 2022

Good Morning.
I’m loading for a new 300WSM. I have a great load for my Win model 70 WSM using 165gr Barnes TSX and 59.0 gr of Accurate 2520 COLA 2.850 FED 2015 primer.

However, I have a new Fierce .300 WSM and want to to load 200gr ELDX. I have Accurate 2520, Accurate No. 9, and Reloader 19 on my shelf now.

I am also hoping to work loads for .300 WinMag using 200gr ELDx or 212gr ELDX.
I would appreciate a QL for these powders or suggestions/input for other powder options as well.
Thanks in Advance.

Dr. Vette · May 15, 2022

I've had very good success with 7828SSC and the 200 ELD-X in my 300 WSM.

DrMike · May 16, 2022

Code:

Cartridge          : .300 WSM (CIP)
Bullet             : .308, 200, Hornady ELD-X 3076 G7
Useable Case Capaci: 67.931 grain H2O = 4.411 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-19 *C

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   82    51.60   2289    2327   32799   8628     91.6    1.611
-18.0   84    52.89   2345    2442   34996   8892     92.8    1.568
-16.0   87    54.18   2401    2560   37343   9148     93.9    1.525
-14.0   89    55.47   2457    2681   39845   9393     94.8    1.479
-12.0   91    56.76   2513    2804   42518   9627     95.7    1.435
-10.0   93    58.05   2569    2931   45372   9850     96.6    1.392
-08.0   95    59.34   2625    3059   48431  10059     97.3    1.351
-06.0   97    60.63   2680    3190   51701  10255     98.0    1.311
-04.0   99    61.92   2736    3324   55199  10435     98.5    1.273  ! Near Maximum !
-02.0  101    63.21   2791    3459   58921  10600     99.0    1.236  ! Near Maximum !
+00.0  103    64.50   2846    3597   62890  10749     99.4    1.201  ! Near Maximum !
+02.0  105    65.79   2901    3737   67141  10880     99.7    1.167  !DANGEROUS LOAD-DO NOT USE!
+04.0  107    67.08   2955    3879   71698  10992     99.9    1.134  !DANGEROUS LOAD-DO NOT USE!
+06.0  109    68.37   3010    4023   76587  11086    100.0    1.102  !DANGEROUS LOAD-DO NOT USE!
+08.0  111    69.66   3064    4168   81841  11161    100.0    1.071  !DANGEROUS LOAD-DO NOT USE!
+10.0  113    70.95   3117    4315   87494  11229    100.0    1.041  !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    103    64.50   2961    3894   74934  10388    100.0    1.118  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    103    64.50   2683    3197   51264  10611     94.8    1.310

DrMike · May 16, 2022

Accurate 2520 is a faster propellant than I would prefer to use, though it will work.

Code:

Cartridge          : .300 WSM (CIP)
Bullet             : .308, 200, Hornady ELD-X 3076 G7
Useable Case Capaci: 67.931 grain H2O = 4.411 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Accurate 2520

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   67    44.40   2282    2313   35188   7557    100.0    1.621
-18.0   69    45.51   2329    2408   37362   7671    100.0    1.581
-16.0   71    46.62   2374    2503   39651   7783    100.0    1.537
-14.0   72    47.73   2419    2599   42063   7892    100.0    1.495
-12.0   74    48.84   2464    2695   44601   8001    100.0    1.454
-10.0   76    49.95   2507    2792   47275   8107    100.0    1.415
-08.0   77    51.06   2551    2889   50090   8212    100.0    1.378
-06.0   79    52.17   2593    2987   53055   8315    100.0    1.342
-04.0   81    53.28   2636    3085   56178   8416    100.0    1.308  ! Near Maximum !
-02.0   82    54.39   2678    3185   59469   8515    100.0    1.274  ! Near Maximum !
+00.0   84    55.50   2720    3284   62937   8612    100.0    1.243  ! Near Maximum !
+02.0   86    56.61   2761    3385   66594   8707    100.0    1.212  !DANGEROUS LOAD-DO NOT USE!
+04.0   87    57.72   2802    3486   70451   8799    100.0    1.183  !DANGEROUS LOAD-DO NOT USE!
+06.0   89    58.83   2843    3589   74522   8890    100.0    1.155  !DANGEROUS LOAD-DO NOT USE!
+08.0   91    59.94   2883    3692   78820   8978    100.0    1.127  !DANGEROUS LOAD-DO NOT USE!
+10.0   92    61.05   2924    3796   83363   9063    100.0    1.101  !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     84    55.50   2782    3438   73619   8364    100.0    1.168  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     84    55.50   2625    3060   52039   8974    100.0    1.346

BossGobbler · May 16, 2022

Thank you Drs. Mike and Vette!

DrMike · May 16, 2022

For sure the No. 9 is way too fast to even consider as a propellant in your WSM. RL19 is just about ideal for the cartridge.

BossGobbler · May 16, 2022

Good to know. Thanks DrMike

TackDriver284 · May 17, 2022

DrMike said:
For sure the No. 9 is way too fast to even consider as a propellant in your WSM. RL19 is just about ideal for the cartridge.

Yup Dr. Mike, the No. 9 a pistol powder.

BossGobbler · Aug 20, 2022

DrMike said:
For sure the No. 9 is way too fast to even consider as a propellant in your WSM. RL19 is just about ideal for the cartridge.

df

DrMike said:

Accurate 2520 is a faster propellant than I would prefer to use, though it will work.

Code:

Cartridge          : .300 WSM (CIP)
Bullet             : .308, 200, Hornady ELD-X 3076 G7
Useable Case Capaci: 67.931 grain H2O = 4.411 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Accurate 2520

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   67    44.40   2282    2313   35188   7557    100.0    1.621
-18.0   69    45.51   2329    2408   37362   7671    100.0    1.581
-16.0   71    46.62   2374    2503   39651   7783    100.0    1.537
-14.0   72    47.73   2419    2599   42063   7892    100.0    1.495
-12.0   74    48.84   2464    2695   44601   8001    100.0    1.454
-10.0   76    49.95   2507    2792   47275   8107    100.0    1.415
-08.0   77    51.06   2551    2889   50090   8212    100.0    1.378
-06.0   79    52.17   2593    2987   53055   8315    100.0    1.342
-04.0   81    53.28   2636    3085   56178   8416    100.0    1.308  ! Near Maximum !
-02.0   82    54.39   2678    3185   59469   8515    100.0    1.274  ! Near Maximum !
+00.0   84    55.50   2720    3284   62937   8612    100.0    1.243  ! Near Maximum !
+02.0   86    56.61   2761    3385   66594   8707    100.0    1.212  !DANGEROUS LOAD-DO NOT USE!
+04.0   87    57.72   2802    3486   70451   8799    100.0    1.183  !DANGEROUS LOAD-DO NOT USE!
+06.0   89    58.83   2843    3589   74522   8890    100.0    1.155  !DANGEROUS LOAD-DO NOT USE!
+08.0   91    59.94   2883    3692   78820   8978    100.0    1.127  !DANGEROUS LOAD-DO NOT USE!
+10.0   92    61.05   2924    3796   83363   9063    100.0    1.101  !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     84    55.50   2782    3438   73619   8364    100.0    1.168  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     84    55.50   2625    3060   52039   8974    100.0    1.346

DrMike, did you happen to find a QL for the .300 WinMag using Reloader19 or should I consider searching for a different powder. None of my reloading books show Reloader 19 as a propellant using a 200gr bullet. I typically only shoot WSM but just got a .300 Christenson MPR and want to work up a good round for it with 200 Gr Eldx if I can find powder. RL19 is the only stock I really have at this time.

DrMike · Aug 20, 2022

I am somewhat unclear on the reason for your question. I'm happy to provide you with a projection for the 300 Win Mag using RL19 with the 200 grain ELD-X.

Code:

Cartridge          : .300 Win. Mag.(SAAMI)
Bullet             : .308, 200, Hornady ELD-X 3076 G7
Useable Case Capaci: 77.678 grain H2O = 5.044 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-19 *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   88    63.36   2623    3056   46232  11087     97.7    1.382
-09.0   89    64.06   2651    3120   47696  11200     98.1    1.362
-08.0   90    64.77   2678    3186   49205  11309     98.3    1.343
-07.0   91    65.47   2706    3251   50760  11414     98.6    1.323
-06.0   92    66.18   2733    3318   52363  11515     98.9    1.304
-05.0   93    66.88   2761    3385   54015  11612     99.1    1.285
-04.0   94    67.58   2788    3452   55719  11704     99.3    1.267  ! Near Maximum !
-03.0   95    68.29   2815    3520   57475  11792     99.4    1.249  ! Near Maximum !
-02.0   96    68.99   2842    3588   59286  11875     99.6    1.232  ! Near Maximum !
-01.0   97    69.70   2869    3656   61154  11953     99.7    1.214  ! Near Maximum !
+00.0   98    70.40   2896    3725   63081  12027     99.8    1.197  ! Near Maximum !
+01.0   99    71.10   2923    3795   65068  12096     99.9    1.181  !DANGEROUS LOAD-DO NOT USE!
+02.0  100    71.81   2950    3865   67119  12160    100.0    1.164  !DANGEROUS LOAD-DO NOT USE!
+03.0  101    72.51   2977    3935   69236  12219    100.0    1.148  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    73.22   3003    4005   71421  12272    100.0    1.133  !DANGEROUS LOAD-DO NOT USE!
+05.0  103    73.92   3030    4076   73677  12323    100.0    1.117  !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     98    70.40   3005    4010   74534  11612    100.0    1.116  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     98    70.40   2740    3333   51744  11995     96.2    1.305