QL Request, for .270 Win
- Thread starter Clarktom6
- Start date
TackDriver284
Handloader
- Feb 13, 2016
- 2,523
- 2,024
Code:
Cartridge : .270 Win. (SAAMI)
Bullet : .277, 150, Nosler Accubond LR 58836 G7
Useable Case Capaci: 58.520 grain H2O = 3.800 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Winchester 760
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 84 47.70 2678 2389 45993 10410 97.7 1.334
-09.0 85 48.23 2706 2439 47461 10512 98.0 1.315
-08.0 85 48.76 2734 2490 48974 10610 98.3 1.295
-07.0 86 49.29 2762 2541 50534 10705 98.6 1.277
-06.0 87 49.82 2790 2593 52142 10795 98.8 1.258
-05.0 88 50.35 2818 2645 53800 10881 99.1 1.240
-04.0 89 50.88 2846 2697 55509 10963 99.3 1.223 ! Near Maximum !
-03.0 90 51.41 2873 2750 57272 11041 99.4 1.205 ! Near Maximum !
-02.0 91 51.94 2901 2803 59090 11114 99.6 1.188 ! Near Maximum !
-01.0 92 52.47 2928 2856 60965 11182 99.7 1.172 ! Near Maximum !
+00.0 93 53.00 2956 2910 62899 11246 99.8 1.155 ! Near Maximum !
+01.0 94 53.53 2983 2963 64895 11306 99.9 1.139 !DANGEROUS LOAD-DO NOT USE!
+02.0 95 54.06 3010 3018 66954 11360 100.0 1.123 !DANGEROUS LOAD-DO NOT USE!
+03.0 96 54.59 3037 3072 69080 11410 100.0 1.108 !DANGEROUS LOAD-DO NOT USE!
+04.0 97 55.12 3064 3127 71275 11455 100.0 1.093 !DANGEROUS LOAD-DO NOT USE!
+05.0 98 55.65 3091 3182 73541 11497 100.0 1.078 !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 93 53.00 3067 3134 74690 10814 100.0 1.075 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 93 53.00 2793 2598 51318 11254 96.1 1.262TackDriver284
Handloader
- Feb 13, 2016
- 2,523
- 2,024
Code:
Cartridge : .270 Win. (SAAMI)
Bullet : .277, 150, Nosler Accubond LR 58836 G7
Useable Case Capaci: 58.520 grain H2O = 3.800 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Ramshot Magnum
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 55.80 2624 2293 41392 10680 95.5 1.382
-09.0 96 56.42 2659 2354 43026 10804 96.1 1.356
-08.0 97 57.04 2694 2417 44766 10922 96.6 1.331
-07.0 98 57.66 2729 2480 46572 11034 97.1 1.306
-06.0 99 58.28 2764 2545 48474 11138 97.6 1.282
-05.0 100 58.90 2800 2611 50464 11235 98.0 1.259
-04.0 101 59.52 2835 2677 52557 11325 98.4 1.235
-03.0 102 60.14 2871 2744 54754 11407 98.7 1.212
-02.0 103 60.76 2906 2813 57065 11481 99.0 1.190 ! Near Maximum !
-01.0 104 61.38 2942 2882 59497 11546 99.3 1.168 ! Near Maximum !
+00.0 106 62.00 2977 2952 62058 11603 99.5 1.146 ! Near Maximum !
+01.0 107 62.62 3013 3023 64759 11651 99.7 1.124 !DANGEROUS LOAD-DO NOT USE!
+02.0 108 63.24 3048 3095 67606 11689 99.8 1.103 !DANGEROUS LOAD-DO NOT USE!
+03.0 109 63.86 3084 3168 70615 11718 99.9 1.082 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 64.48 3120 3242 73795 11737 100.0 1.062 !DANGEROUS LOAD-DO NOT USE!
+05.0 111 65.10 3155 3316 77160 11746 100.0 1.042 !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 106 62.00 3129 3262 78007 11063 100.0 1.049 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 62.00 2755 2528 48971 11421 93.6 1.273- Thread starter
- #4
DrMike
Ballistician
- Nov 8, 2006
- 37,312
- 5,977
Code:
Cartridge : .270 Win. (SAAMI)
Bullet : .277, 150, Nosler Accubond LR 58836
Useable Case Capaci: 58.520 grain H2O = 3.800 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Ramshot Hunter
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 89 49.50 2689 2408 46141 10474 98.5 1.328
-09.0 90 50.05 2717 2459 47656 10570 98.7 1.309
-08.0 91 50.60 2746 2511 49218 10662 99.0 1.289
-07.0 92 51.15 2774 2563 50830 10750 99.2 1.270
-06.0 93 51.70 2802 2615 52495 10833 99.4 1.252
-05.0 94 52.25 2830 2668 54212 10912 99.6 1.233
-04.0 95 52.80 2858 2721 55986 10986 99.7 1.216 ! Near Maximum !
-03.0 96 53.35 2886 2774 57818 11055 99.8 1.198 ! Near Maximum !
-02.0 97 53.90 2914 2828 59709 11119 99.9 1.181 ! Near Maximum !
-01.0 98 54.45 2941 2882 61663 11178 100.0 1.164 ! Near Maximum !
+00.0 99 55.00 2969 2936 63682 11232 100.0 1.147 ! Near Maximum !
+01.0 100 55.55 2996 2991 65768 11281 100.0 1.131 !DANGEROUS LOAD-DO NOT USE!
+02.0 101 56.10 3024 3045 67924 11328 100.0 1.115 !DANGEROUS LOAD-DO NOT USE!
+03.0 102 56.65 3051 3100 70153 11373 100.0 1.099 !DANGEROUS LOAD-DO NOT USE!
+04.0 103 57.20 3078 3155 72458 11418 100.0 1.084 !DANGEROUS LOAD-DO NOT USE!
+05.0 104 57.75 3105 3211 74841 11462 100.0 1.069 !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 99 55.00 3077 3154 75946 10809 100.0 1.068 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 55.00 2808 2627 51614 11349 97.1 1.253
