Reloder 33

[Bruce Mc]

Could one of you oblige me with a quickload for 7mm rem mag and the 160 AccuBond for reloder 33. 26" barrel.

 

[DrMike]

Cartridge : 7 mm Rem. Mag.(SAAMI)
Bullet : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 72.296 grain H2O = 4.694 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-33

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   86    63.20   2391    2031   27638  10240     81.9    1.752
-18.0   88    64.78   2464    2156   29745  10675     83.9    1.703
-16.0   91    66.36   2538    2288   32038  11102     85.8    1.661
-14.0   93    67.94   2613    2426   34537  11516     87.6    1.610
-12.0   95    69.52   2689    2569   37261  11915     89.4    1.560
-10.0   97    71.10   2766    2719   40238  12297     91.0    1.502
-08.0   99    72.68   2844    2874   43495  12657     92.5    1.447
-06.0  101    74.26   2923    3036   47067  12994     93.9    1.394
-04.0  104    75.84   3002    3203   50992  13303     95.2    1.342
-02.0  106    77.42   3082    3375   55313  13583     96.4    1.292  ! Near Maximum !
+00.0  108    79.00   3163    3553   60086  13830     97.4    1.244  ! Near Maximum !
+02.0  110    80.58   3243    3737   65370  14041     98.2    1.197  !DANGEROUS LOAD-DO NOT USE!
+04.0  112    82.16   3324    3926   71237  14213     98.9    1.152  !DANGEROUS LOAD-DO NOT USE!
+06.0  114    83.74   3406    4120   77770  14343     99.4    1.108  !DANGEROUS LOAD-DO NOT USE!
+08.0  116    85.32   3487    4320   85084  14429     99.8    1.066  !DANGEROUS LOAD-DO NOT USE!
+10.0  119    86.90   3568    4524   93273  14467    100.0    1.025  !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 108 79.00 3363 4019 76541 13561 100.0 1.128 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 108 79.00 2891 2969 46724 13048 88.6 1.393

 

[Bruce Mc]

That was sure quick. Thanks Doc.

 

[DrMike]

Looks to be a screamer. If I could get RL33 up here, I would be trying it in a few rifles such as my 7RM.

 

[Bruce Mc]

I'm looking for a load that will top 3100 fps with the AccuBond and with a temperature stable powder. It might just punch that ticket. Of course bug holes are preferred.

 

[preacher]

Hey Uncle Bruce, I got 3130 with the 160 Sierra HPBT and 69/R26/Fed 215M out of my 26" 7mm mag. I like R33 with the 175 Sierra, got 3030 or so with 78gr and the Sierra 175SBT.

 

[Bruce Mc]

I'll give the Re 33 a try with a 175 Partition along the way.

 

[SJB358]

I need to give it a shot in my Masburn. Might be real good if the accuracy sticks

 

[Wyo7200]

Sometimes, timing is everything... I'm becoming convicted that the way to load reloder powders is to work up the load in the temp (or as close to it as possible) that you will be shooting in. Playing with the temp variable in QL, based off chrono and paper results at various temperatures for two calibers so far, (freakin cold up to 90), I think there is a "preferred" temp that you can develop your reloder load at and have it perform +\- 30 degrees before the btime is outside of an obt node. I'm about to test two more rifles /loads with this, but the rifles I've done and the estimates look promising. I guess it's the keyboard commandos method of finding a tolerant ocw. I'm still trying to make sense of it.