Need .458 Lott, 300 gr TSX load data (h322 or H4198)
- Thread starter Rhoden101
- Start date
In Australia we call H4198 ... AR2207.
A friend and I did some playing with a locally produced monolithic prototype of 300gr weight ... me in a 458AccRel, friend in a 458Lott.
In the 458Lott ... 80gr AR2207 was pushing 2875fps ... working upto 84gr for 2925fps.
Safest bet is to always start with the maximum 458WinMag loads and just leap-frog up in 2gr increments. But somewhere between 80gr through to 85gr will probably be where you'll end up. Actually ... you can go higher but I wouldn't recommend that in somebody elses unknown rifle. :mrgreen:
Cheers...
Con
A friend and I did some playing with a locally produced monolithic prototype of 300gr weight ... me in a 458AccRel, friend in a 458Lott.
In the 458Lott ... 80gr AR2207 was pushing 2875fps ... working upto 84gr for 2925fps.
Safest bet is to always start with the maximum 458WinMag loads and just leap-frog up in 2gr increments. But somewhere between 80gr through to 85gr will probably be where you'll end up. Actually ... you can go higher but I wouldn't recommend that in somebody elses unknown rifle. :mrgreen:
Cheers...
Con
DrMike
Ballistician
- Nov 8, 2006
- 37,268
- 5,824
Cartridge : .458 Lott
Bullet : .458, 300, Barnes 'TSX' FB 45814
Useable Case Capaci: 98.128 grain H2O = 6.371 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H322
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 83 72.80 2371 3745 32264 6457 93.5 1.232
-18.0 85 74.62 2426 3921 34358 6636 94.5 1.202
-16.0 87 76.44 2481 4101 36594 6808 95.4 1.173
-14.0 89 78.26 2536 4284 38978 6972 96.2 1.144
-12.0 91 80.08 2591 4472 41524 7126 97.0 1.116
-10.0 93 81.90 2646 4662 44244 7272 97.7 1.089
-08.0 95 83.72 2700 4856 47155 7407 98.2 1.059
-06.0 97 85.54 2754 5053 50267 7531 98.8 1.030
-04.0 99 87.36 2808 5254 53605 7644 99.2 1.001 ! Near Maximum !
-02.0 102 89.18 2862 5457 57171 7745 99.5 0.974 ! Near Maximum !
+00.0 104 91.00 2915 5662 61019 7834 99.8 0.947 ! Near Maximum !
+02.0 106 92.82 2969 5870 65119 7909 99.9 0.921 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 94.64 3021 6081 69500 7971 100.0 0.897 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 96.46 3074 6293 74205 8022 100.0 0.873 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 98.28 3126 6508 79268 8069 100.0 0.850 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 100.10 3177 6725 84724 8113 100.0 0.827 !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 104 91.00 3022 6085 72662 7512 100.0 0.886 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 91.00 2760 5074 49929 7849 96.0 1.028
Cartridge : .458 Lott
Bullet : .458, 300, Barnes 'TSX' FB 45814
Useable Case Capaci: 98.128 grain H2O = 6.371 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4198
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 77 65.60 2334 3629 34960 5808 94.4 1.216
-18.0 79 67.24 2384 3785 37022 5958 95.2 1.188
-16.0 81 68.88 2433 3944 39198 6103 96.0 1.160
-14.0 83 70.52 2483 4106 41494 6242 96.6 1.134
-12.0 85 72.16 2532 4270 43915 6375 97.3 1.108
-10.0 87 73.80 2580 4435 46471 6501 97.8 1.081
-08.0 89 75.44 2629 4603 49169 6620 98.3 1.053
-06.0 91 77.08 2677 4773 52017 6732 98.7 1.027
-04.0 93 78.72 2725 4945 55025 6837 99.1 1.002 ! Near Maximum !
-02.0 95 80.36 2772 5118 58203 6933 99.4 0.978 ! Near Maximum !
+00.0 97 82.00 2819 5293 61563 7021 99.6 0.954 ! Near Maximum !
+02.0 98 83.64 2866 5470 65117 7101 99.8 0.931 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 85.28 2912 5648 68878 7172 99.9 0.910 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 86.92 2958 5827 72863 7233 100.0 0.889 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 88.56 3003 6008 77086 7287 100.0 0.868 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 90.20 3048 6190 81566 7338 100.0 0.848 !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 97 82.00 2906 5625 70674 6771 100.0 0.902 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 97 82.00 2695 4837 52540 7032 96.3 1.022
Bullet : .458, 300, Barnes 'TSX' FB 45814
Useable Case Capaci: 98.128 grain H2O = 6.371 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H322
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 83 72.80 2371 3745 32264 6457 93.5 1.232
-18.0 85 74.62 2426 3921 34358 6636 94.5 1.202
-16.0 87 76.44 2481 4101 36594 6808 95.4 1.173
-14.0 89 78.26 2536 4284 38978 6972 96.2 1.144
-12.0 91 80.08 2591 4472 41524 7126 97.0 1.116
-10.0 93 81.90 2646 4662 44244 7272 97.7 1.089
-08.0 95 83.72 2700 4856 47155 7407 98.2 1.059
-06.0 97 85.54 2754 5053 50267 7531 98.8 1.030
-04.0 99 87.36 2808 5254 53605 7644 99.2 1.001 ! Near Maximum !
-02.0 102 89.18 2862 5457 57171 7745 99.5 0.974 ! Near Maximum !
+00.0 104 91.00 2915 5662 61019 7834 99.8 0.947 ! Near Maximum !
+02.0 106 92.82 2969 5870 65119 7909 99.9 0.921 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 94.64 3021 6081 69500 7971 100.0 0.897 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 96.46 3074 6293 74205 8022 100.0 0.873 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 98.28 3126 6508 79268 8069 100.0 0.850 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 100.10 3177 6725 84724 8113 100.0 0.827 !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 104 91.00 3022 6085 72662 7512 100.0 0.886 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 91.00 2760 5074 49929 7849 96.0 1.028
Cartridge : .458 Lott
Bullet : .458, 300, Barnes 'TSX' FB 45814
Useable Case Capaci: 98.128 grain H2O = 6.371 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4198
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 77 65.60 2334 3629 34960 5808 94.4 1.216
-18.0 79 67.24 2384 3785 37022 5958 95.2 1.188
-16.0 81 68.88 2433 3944 39198 6103 96.0 1.160
-14.0 83 70.52 2483 4106 41494 6242 96.6 1.134
-12.0 85 72.16 2532 4270 43915 6375 97.3 1.108
-10.0 87 73.80 2580 4435 46471 6501 97.8 1.081
-08.0 89 75.44 2629 4603 49169 6620 98.3 1.053
-06.0 91 77.08 2677 4773 52017 6732 98.7 1.027
-04.0 93 78.72 2725 4945 55025 6837 99.1 1.002 ! Near Maximum !
-02.0 95 80.36 2772 5118 58203 6933 99.4 0.978 ! Near Maximum !
+00.0 97 82.00 2819 5293 61563 7021 99.6 0.954 ! Near Maximum !
+02.0 98 83.64 2866 5470 65117 7101 99.8 0.931 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 85.28 2912 5648 68878 7172 99.9 0.910 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 86.92 2958 5827 72863 7233 100.0 0.889 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 88.56 3003 6008 77086 7287 100.0 0.868 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 90.20 3048 6190 81566 7338 100.0 0.848 !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 97 82.00 2906 5625 70674 6771 100.0 0.902 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 97 82.00 2695 4837 52540 7032 96.3 1.022
- Thread starter
- #4
DrMike
Ballistician
- Nov 8, 2006
- 37,268
- 5,824
Rhoden101,
Good to have you on board. If you have an opportunity, give a picture of your rifle and perhaps some of your cartridges. I know many people would appreciate seeing what you have. Are you hunting Africa? Or planning to hunt Africa?
Good to have you on board. If you have an opportunity, give a picture of your rifle and perhaps some of your cartridges. I know many people would appreciate seeing what you have. Are you hunting Africa? Or planning to hunt Africa?
- Thread starter
- #6
DrMike
Ballistician
- Nov 8, 2006
- 37,268
- 5,824
That load will certainly work on elk! :grin:
- Oct 30, 2004
- 24,232
- 2,913
I have worked with the 350 gr TSX in my 458 Lott(s).
This is actual data
458 LOTT 350 BARNES TSX 81/H4198 2840 fps
458 LOTT 350 BARNES TSX 93/H4895 2810 fps
max loads
This is actual data
458 LOTT 350 BARNES TSX 81/H4198 2840 fps
458 LOTT 350 BARNES TSX 93/H4895 2810 fps
max loads
- Thread starter
- #9
- Thread starter
- #10
Results below for 458 Lott, 300 gr flat base TSX
.458 Lott, Ruger M77 II RSM
83.0 gr H4198, three shot average velocity=2820 fps (most accurate)
84.0 gr H4198, three shot average velocity=2895 fps (max load)
85.0 gr H4198, three shot average velocity=2930 fps (flattened primers)
88.0 gr H322, three shot average velocity=2885 fps (max load)
87.0 gr H322, three shot average velocity=2805 fps
85.0 gr H322, three shot average velocity=2750 fps
I would now like to try loading 350 gr North Fork semi spitzers with H322 or IMR3031, if some one has data they would like to share I would appreciate what you have.
.458 Lott, Ruger M77 II RSM
83.0 gr H4198, three shot average velocity=2820 fps (most accurate)
84.0 gr H4198, three shot average velocity=2895 fps (max load)
85.0 gr H4198, three shot average velocity=2930 fps (flattened primers)
88.0 gr H322, three shot average velocity=2885 fps (max load)
87.0 gr H322, three shot average velocity=2805 fps
85.0 gr H322, three shot average velocity=2750 fps
I would now like to try loading 350 gr North Fork semi spitzers with H322 or IMR3031, if some one has data they would like to share I would appreciate what you have.
