Dr. Mike could you help with some Quickloads-Please
- Thread starter rmarshall
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,612
- 6,817
Glad to help.
Cartridge : .270 WSM
Bullet : .277, 140, Nosler AccuBond 54765
Useable Case Capaci: 71.442 grain H2O = 4.639 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4350
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 75 49.20 2543 2010 35037 9794 94.5 1.502
-18.0 77 50.43 2600 2102 37226 10062 95.4 1.467
-16.0 79 51.66 2658 2196 39538 10319 96.3 1.424
-14.0 81 52.89 2715 2291 41979 10565 97.0 1.384
-12.0 83 54.12 2772 2388 44559 10798 97.7 1.345
-10.0 84 55.35 2828 2487 47283 11017 98.3 1.308
-08.0 86 56.58 2884 2586 50160 11221 98.8 1.272
-06.0 88 57.81 2940 2687 53201 11411 99.2 1.237
-04.0 90 59.04 2995 2789 56414 11584 99.5 1.204 ! Near Maximum !
-02.0 92 60.27 3050 2892 59810 11740 99.8 1.172 ! Near Maximum !
+00.0 94 61.50 3105 2996 63402 11879 99.9 1.141 ! Near Maximum !
+02.0 96 62.73 3158 3101 67201 12000 100.0 1.112 !DANGEROUS LOAD-DO NOT USE!
+04.0 98 63.96 3212 3207 71224 12106 100.0 1.083 !DANGEROUS LOAD-DO NOT USE!
+06.0 100 65.19 3264 3313 75484 12210 100.0 1.055 !DANGEROUS LOAD-DO NOT USE!
+08.0 101 66.42 3317 3420 80000 12310 100.0 1.029 !DANGEROUS LOAD-DO NOT USE!
+10.0 103 67.65 3369 3528 84789 12407 100.0 1.003 !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 61.50 3208 3199 73556 11494 100.0 1.069 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 94 61.50 2954 2713 53232 11921 97.0 1.236
Take note that Nosler RG No. 6 (pressure tested load) lists a maximum charge of 60.5 grains of IMR 4350. You will want to approach maximum with care, watching for signs of pressue.
Cartridge : .260 Rem
Bullet : .264, 129, Hornady SST InterLock 26202
Useable Case Capaci: 46.378 grain H2O = 3.011 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4350
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 81 34.40 2235 1431 31071 8083 88.1 1.488
-18.0 83 35.26 2289 1501 33093 8346 89.3 1.448
-16.0 85 36.12 2344 1573 35247 8604 90.5 1.410
-14.0 87 36.98 2398 1647 37538 8855 91.6 1.371
-12.0 89 37.84 2452 1723 39979 9099 92.6 1.331
-10.0 91 38.70 2507 1800 42578 9335 93.6 1.293
-08.0 93 39.56 2561 1879 45326 9561 94.6 1.256
-06.0 95 40.42 2616 1960 48234 9778 95.4 1.220
-04.0 97 41.28 2670 2042 51332 9984 96.2 1.185 ! Near Maximum !
-02.0 99 42.14 2725 2126 54633 10179 96.9 1.152 ! Near Maximum !
+00.0 101 43.00 2779 2212 58154 10362 97.6 1.120 ! Near Maximum !
+02.0 103 43.86 2833 2299 61912 10531 98.1 1.089 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 44.72 2887 2388 65927 10686 98.6 1.059 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 45.58 2941 2478 70221 10827 99.0 1.030 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 46.44 2995 2570 74818 10953 99.4 1.002 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 47.30 3049 2662 79745 11062 99.7 0.974 !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 101 43.00 2903 2414 68556 10255 99.9 1.043 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 43.00 2615 1959 47976 9995 91.5 1.219
Again, take note that Hornady Handbook No. 8 does not list IMR 4350 with the 129 grain bullets. However, other bullet manufacturers do list IMR 4350 WITH 130 grain bullets, and these projections are within listed parameters with those differing bullets. Again, work up carefully to maximum.
Cartridge : .270 WSM
Bullet : .277, 140, Nosler AccuBond 54765
Useable Case Capaci: 71.442 grain H2O = 4.639 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4350
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 75 49.20 2543 2010 35037 9794 94.5 1.502
-18.0 77 50.43 2600 2102 37226 10062 95.4 1.467
-16.0 79 51.66 2658 2196 39538 10319 96.3 1.424
-14.0 81 52.89 2715 2291 41979 10565 97.0 1.384
-12.0 83 54.12 2772 2388 44559 10798 97.7 1.345
-10.0 84 55.35 2828 2487 47283 11017 98.3 1.308
-08.0 86 56.58 2884 2586 50160 11221 98.8 1.272
-06.0 88 57.81 2940 2687 53201 11411 99.2 1.237
-04.0 90 59.04 2995 2789 56414 11584 99.5 1.204 ! Near Maximum !
-02.0 92 60.27 3050 2892 59810 11740 99.8 1.172 ! Near Maximum !
+00.0 94 61.50 3105 2996 63402 11879 99.9 1.141 ! Near Maximum !
+02.0 96 62.73 3158 3101 67201 12000 100.0 1.112 !DANGEROUS LOAD-DO NOT USE!
+04.0 98 63.96 3212 3207 71224 12106 100.0 1.083 !DANGEROUS LOAD-DO NOT USE!
+06.0 100 65.19 3264 3313 75484 12210 100.0 1.055 !DANGEROUS LOAD-DO NOT USE!
+08.0 101 66.42 3317 3420 80000 12310 100.0 1.029 !DANGEROUS LOAD-DO NOT USE!
+10.0 103 67.65 3369 3528 84789 12407 100.0 1.003 !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 61.50 3208 3199 73556 11494 100.0 1.069 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 94 61.50 2954 2713 53232 11921 97.0 1.236
Take note that Nosler RG No. 6 (pressure tested load) lists a maximum charge of 60.5 grains of IMR 4350. You will want to approach maximum with care, watching for signs of pressue.
Cartridge : .260 Rem
Bullet : .264, 129, Hornady SST InterLock 26202
Useable Case Capaci: 46.378 grain H2O = 3.011 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4350
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 81 34.40 2235 1431 31071 8083 88.1 1.488
-18.0 83 35.26 2289 1501 33093 8346 89.3 1.448
-16.0 85 36.12 2344 1573 35247 8604 90.5 1.410
-14.0 87 36.98 2398 1647 37538 8855 91.6 1.371
-12.0 89 37.84 2452 1723 39979 9099 92.6 1.331
-10.0 91 38.70 2507 1800 42578 9335 93.6 1.293
-08.0 93 39.56 2561 1879 45326 9561 94.6 1.256
-06.0 95 40.42 2616 1960 48234 9778 95.4 1.220
-04.0 97 41.28 2670 2042 51332 9984 96.2 1.185 ! Near Maximum !
-02.0 99 42.14 2725 2126 54633 10179 96.9 1.152 ! Near Maximum !
+00.0 101 43.00 2779 2212 58154 10362 97.6 1.120 ! Near Maximum !
+02.0 103 43.86 2833 2299 61912 10531 98.1 1.089 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 44.72 2887 2388 65927 10686 98.6 1.059 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 45.58 2941 2478 70221 10827 99.0 1.030 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 46.44 2995 2570 74818 10953 99.4 1.002 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 47.30 3049 2662 79745 11062 99.7 0.974 !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 101 43.00 2903 2414 68556 10255 99.9 1.043 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 43.00 2615 1959 47976 9995 91.5 1.219
Again, take note that Hornady Handbook No. 8 does not list IMR 4350 with the 129 grain bullets. However, other bullet manufacturers do list IMR 4350 WITH 130 grain bullets, and these projections are within listed parameters with those differing bullets. Again, work up carefully to maximum.
- Thread starter
- #3
DrMike
Ballistician
- Nov 8, 2006
- 37,612
- 6,817
For the 140 AB, I have found RL19 to be one of the finest powders to use. Nosler RG 6 lists 63.5 grains as a max (V=3186 fps). I have had excellent results with this load. Hornady lists 47.9 grains of RL19 as a max with the 129 grain SST (V=2900 fps).
- Thread starter
- #5
