100g NBT/Retumbo QL please

Cartridge : .25-06 Rem.
Bullet : .257, 100, Nosler BalTip 25100
Cartridge O.A.L. L6: 3.350 inch or 85.09 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : Hodgdon Retumbo

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 91 52.80 2557 1452 27428 10582 84.9 1.523
-18.0 93 54.12 2634 1540 29458 11051 87.1 1.481
-16.0 96 55.44 2712 1633 31655 11503 89.2 1.440
-14.0 98 56.76 2791 1730 34034 11932 91.2 1.399
-12.0 100 58.08 2872 1831 36615 12335 93.0 1.358
-10.0 102 59.40 2953 1936 39407 12706 94.6 1.311
-08.0 105 60.72 3035 2045 42465 13042 96.1 1.265
-06.0 107 62.04 3117 2157 45783 13338 97.3 1.220
-04.0 109 63.36 3199 2273 49404 13591 98.3 1.177
-02.0 111 64.68 3281 2391 53358 13796 99.1 1.135
+00.0 114 66.00 3363 2512 57688 13951 99.6 1.094 ! Near Maximum !
+02.0 116 67.32 3445 2635 62438 14053 99.9 1.055 ! Near Maximum !
+04.0 118 68.64 3526 2760 67660 14101 100.0 1.017 !DANGEROUS LOAD-DO NOT USE!
+06.0 121 69.96 3606 2887 73417 14130 100.0 0.980 !DANGEROUS LOAD-DO NOT USE!
+08.0 123 71.28 3685 3016 79784 14151 100.0 0.945 !DANGEROUS LOAD-DO NOT USE!
+10.0 125 72.60 3764 3146 86843 14166 100.0 0.911 !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 114 66.00 3558 2811 71693 13333 100.0 0.997 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 114 66.00 3081 2107 46025 13494 92.6 1.219
 
02.0 116 67.32 3445 2635 62438 14053 99.9 1.055 ! Near Maximum !

As you can see from Steve's post in order to realize the 3445 fps with Retumbo you have to load it to 116 % loading density with 67.32 grains of it. Good luck! :lol:
In other words to darn slow for your purpose.

I might try it tonight with 110 Accubonds though! I am nuts enough.
 
Remmy, here's another powder to think about. The test barrel was a 24", so if you have a 26" the velocity will be more.

Bullet Powder start fps max fps
100PT Hybrid 100V 48.0 3034 44,200 CUP 52.5 3295 51,800 CUP
 
Thanks a lot Steve!!

Well if I can get about a 6ft drop tube I might have a chance in hel, lol...

Dont even think I"ll weigh the charge, just fill the case till its full and seat a bullet, shoot and see what happens!

All kidding aside, I get 3260fps with 58.5g Retumbo and 115g VLD. 58.5g in a 25-06 case dont leave much room to work with, let alone trying to stick another 3-4g in.

I will load some up today and get out tonite or tomorrow and see what happens though and report back, hopefully with 3500fps and 1/2 MOA!!
 
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