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
- 37,825
- 7,558
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
- 37,825
- 7,558
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
- 37,825
- 7,558
That load will certainly work on elk! :grin:
- Oct 30, 2004
- 24,629
- 4,087
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.
- Oct 30, 2004
- 24,629
- 4,087
beast
- Oct 30, 2004
- 24,629
- 4,087
Amen
- Oct 30, 2004
- 24,629
- 4,087
I am playing with the Ruger #1 again in the 458 Lott. Found a good load with the 300 TTSX. 94 gr H335 will launch it at 2850 fps with good accuracy and no excess pressure.
Problem is that it is so compressed that after seating and crimping it requires me to take the de-capping pin assembly out of the resizing die and resizing first 25% of the full loaded cartridge in order to slip nicely into the chamber which it does like virgin brass. This is the step I want to skip.
I believe RL 7 AA 1680 H4198 or IMR 4198 are fast enough that they will not be compressed, hence no issue. Problem is most people/manufacturers are sane (unlike me) and load the Lott as it were meant to be loaded. 450-500 gr bullets. Now these heavy bullets I have loaded with excellent results. I have plenty of loads with these. Its the light ones I want to send out at fast speeds.....you know for scientific data purposes . LOL
Problem is that it is so compressed that after seating and crimping it requires me to take the de-capping pin assembly out of the resizing die and resizing first 25% of the full loaded cartridge in order to slip nicely into the chamber which it does like virgin brass. This is the step I want to skip.
I believe RL 7 AA 1680 H4198 or IMR 4198 are fast enough that they will not be compressed, hence no issue. Problem is most people/manufacturers are sane (unlike me) and load the Lott as it were meant to be loaded. 450-500 gr bullets. Now these heavy bullets I have loaded with excellent results. I have plenty of loads with these. Its the light ones I want to send out at fast speeds.....you know for scientific data purposes . LOL
- Oct 30, 2004
- 24,629
- 4,087
RL338
Handloader
- Mar 23, 2017
- 3,959
- 6,893
That 450gr TSX would be smokin’ out of a Lott , or is it the 460 Wby?
- Oct 30, 2004
- 24,629
- 4,087
458 lott..... but a 300 TTSX. The picture is the 450 tsx from the lott. 2330 fps
The 460 bee did
350 tsx.... 2860 fps
404 Hammer.... 2929 fps
450 tsx. 2600 fps...
Not max loads
The 460 bee did
350 tsx.... 2860 fps
404 Hammer.... 2929 fps
450 tsx. 2600 fps...
Not max loads
