300 WSM with a 150 gr. TTSX

[PaLuke]

Good morning, I have a Tikka T3X stainless in 300 WSM and would like to load 150 gr. Barnes TTSX. I have h4350 but it's not listed on the Barnes website. Does anyone have a starting point for this combination? Thank you very much for your help.

 

[jimbires]

here you go . I don't have TTSX info in a book , but I do in quickload . I also gave you Barnes data I have from a book .

older Barnes coated bullet . the coated bullets will lower pressure , that's why this info allows more powder .




older Barnes data with non- coated bullet .




quickload data . you can see it's about a match to the non-coated bullet data I gave above .

Cartridge : .300 WSM (CIP)
Bullet : .308, 150, Barnes 'TTSX'BT 30366
Useable Case Capaci: 71.585 grain H2O = 4.648 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Hodgdon H4350 *T

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 85 54.72 2627 2298 33208 7636 89.8 1.485
-18.0 87 56.09 2690 2410 35462 7869 91.0 1.445
-16.0 89 57.46 2753 2524 37865 8094 92.1 1.404
-14.0 91 58.82 2816 2641 40431 8311 93.2 1.362
-12.0 93 60.19 2879 2761 43173 8519 94.2 1.322
-10.0 95 61.56 2942 2883 46080 8718 95.1 1.283
-08.0 97 62.93 3005 3007 49165 8905 96.0 1.246
-06.0 100 64.30 3068 3134 52461 9082 96.7 1.210
-04.0 102 65.66 3130 3263 55983 9245 97.4 1.176 ! Near Maximum !
-02.0 104 67.03 3192 3395 59752 9396 98.1 1.143 ! Near Maximum !
+00.0 106 68.40 3255 3528 63786 9534 98.6 1.110 !DANGEROUS LOAD-DO NOT USE!
+02.0 108 69.77 3317 3664 68110 9656 99.0 1.079 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 71.14 3378 3801 72749 9763 99.4 1.049 !DANGEROUS LOAD-DO NOT USE!
+06.0 112 72.50 3439 3940 77731 9855 99.7 1.021 !DANGEROUS LOAD-DO NOT USE!
+08.0 114 73.87 3500 4081 83091 9929 99.9 0.992 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 75.24 3561 4224 88865 9986 100.0 0.965 !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 68.40 3388 3823 75178 9302 100.0 1.037 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 68.40 3073 3145 52619 9321 93.4 1.206



looking at this info , I'd say start at 63.5 grains and work up towards 68.4 grains . watch for pressure as you work up .

 

[PaLuke]

here you go . I don't have TTSX info in a book , but I do in quickload . I also gave you Barnes data I have from a book .

older Barnes coated bullet . the coated bullets will lower pressure , that's why this info allows more powder .

View attachment 20082


older Barnes data with non- coated bullet .

View attachment 20083


quickload data . you can see it's about a match to the non-coated bullet data I gave above .

Cartridge : .300 WSM (CIP)
Bullet : .308, 150, Barnes 'TTSX'BT 30366
Useable Case Capaci: 71.585 grain H2O = 4.648 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Hodgdon H4350 *T

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 85 54.72 2627 2298 33208 7636 89.8 1.485
-18.0 87 56.09 2690 2410 35462 7869 91.0 1.445
-16.0 89 57.46 2753 2524 37865 8094 92.1 1.404
-14.0 91 58.82 2816 2641 40431 8311 93.2 1.362
-12.0 93 60.19 2879 2761 43173 8519 94.2 1.322
-10.0 95 61.56 2942 2883 46080 8718 95.1 1.283
-08.0 97 62.93 3005 3007 49165 8905 96.0 1.246
-06.0 100 64.30 3068 3134 52461 9082 96.7 1.210
-04.0 102 65.66 3130 3263 55983 9245 97.4 1.176 ! Near Maximum !
-02.0 104 67.03 3192 3395 59752 9396 98.1 1.143 ! Near Maximum !
+00.0 106 68.40 3255 3528 63786 9534 98.6 1.110 !DANGEROUS LOAD-DO NOT USE!
+02.0 108 69.77 3317 3664 68110 9656 99.0 1.079 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 71.14 3378 3801 72749 9763 99.4 1.049 !DANGEROUS LOAD-DO NOT USE!
+06.0 112 72.50 3439 3940 77731 9855 99.7 1.021 !DANGEROUS LOAD-DO NOT USE!
+08.0 114 73.87 3500 4081 83091 9929 99.9 0.992 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 75.24 3561 4224 88865 9986 100.0 0.965 !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 68.40 3388 3823 75178 9302 100.0 1.037 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 68.40 3073 3145 52619 9321 93.4 1.206



looking at this info , I'd say start at 63.5 grains and work up towards 68.4 grains . watch for pressure as you work up .

Thank you very much. Have a great day.

 

[jimbires]

PaLuke , not all bullets of the same weight coincide like this , actually this surprised me how close they are . I only showed book data to show the quickload data was in the ballpark . a lot of guys like to see book data . guys I've helped get started in reloading I tell them to use book data , or reliable source data , to be safe . you did the right thing , when you don't know , ask . a lot of good guys on here will help .

 

[PaLuke]

Thank you for the info. I do appreciate it. Take care.