IMR 4451 Quick Load

[Bruce Mc]

Could one of you gentlemen run a quick load on 270 winchester, IMR-4451, Nosler 130 gr Partition, 130 gr AccuBond, 22" barrel.

 

[TackDriver284]

Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 130, Nosler PART SP 16322
Useable Case Capaci: 61.885 grain H2O = 4.018 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : IMR 4451 Enduron

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   85    47.70   2707    2115   44976  10921     95.2    1.200
-09.0   86    48.23   2735    2159   46305  11050     95.6    1.184
-08.0   87    48.76   2763    2203   47671  11175     96.0    1.168
-07.0   87    49.29   2791    2248   49074  11298     96.4    1.152
-06.0   88    49.82   2818    2293   50517  11418     96.7    1.136
-05.0   89    50.35   2846    2338   52000  11536     97.1    1.120
-04.0   90    50.88   2874    2384   53524  11650     97.4    1.105
-03.0   91    51.41   2902    2430   55091  11761     97.7    1.090
-02.0   92    51.94   2929    2477   56703  11870     98.0    1.076  ! Near Maximum !
-01.0   93    52.47   2957    2523   58360  11974     98.2    1.062  ! Near Maximum !
+00.0   94    53.00   2984    2570   60065  12076     98.5    1.047  ! Near Maximum !
+01.0   95    53.53   3012    2618   61818  12174     98.7    1.034  ! Near Maximum !
+02.0   96    54.06   3039    2666   63622  12268     98.9    1.020  ! Near Maximum !
+03.0   97    54.59   3066    2714   65477  12358     99.1    1.007  !DANGEROUS LOAD-DO NOT USE!
+04.0   98    55.12   3093    2762   67387  12445     99.3    0.994  !DANGEROUS LOAD-DO NOT USE!
+05.0   99    55.65   3121    2811   69352  12528     99.4    0.981  !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     94    53.00   3102    2778   69387  11910    100.0    0.981  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     94    53.00   2827    2306   50813  11741     93.4    1.133

Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 130, Nosler AccuBond 54987
Useable Case Capaci: 60.375 grain H2O = 3.920 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : IMR 4451 Enduron

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   87    47.70   2741    2169   46961  10870     95.6    1.177
-09.0   88    48.23   2770    2214   48377  10994     96.0    1.161
-08.0   89    48.76   2798    2260   49833  11115     96.4    1.145
-07.0   90    49.29   2826    2305   51331  11234     96.7    1.129
-06.0   91    49.82   2854    2352   52872  11350     97.1    1.113
-05.0   92    50.35   2882    2398   54458  11462     97.4    1.098
-04.0   93    50.88   2911    2445   56090  11572     97.7    1.083  ! Near Maximum !
-03.0   93    51.41   2939    2493   57769  11678     98.0    1.068  ! Near Maximum !
-02.0   94    51.94   2967    2540   59498  11781     98.3    1.054  ! Near Maximum !
-01.0   95    52.47   2995    2589   61278  11880     98.5    1.040  ! Near Maximum !
+00.0   96    53.00   3022    2637   63110  11976     98.7    1.026  ! Near Maximum !
+01.0   97    53.53   3050    2686   64997  12068     98.9    1.012  !DANGEROUS LOAD-DO NOT USE!
+02.0   98    54.06   3078    2735   66940  12156     99.1    0.999  !DANGEROUS LOAD-DO NOT USE!
+03.0   99    54.59   3106    2784   68942  12240     99.3    0.985  !DANGEROUS LOAD-DO NOT USE!
+04.0  100    55.12   3133    2834   71004  12321     99.5    0.972  !DANGEROUS LOAD-DO NOT USE!
+05.0  101    55.65   3161    2884   73129  12397     99.6    0.960  !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     96    53.00   3139    2844   72955  11764    100.0    0.961  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    53.00   2865    2370   53338  11690     93.9    1.109

 

[Bruce Mc]

Thankyou Tack