300RUM, 200gr Accubond & IMR7828ssc

[300bigbertha]

I would like to know if any one has any kind of info on IMR7828ssc in a 300RUM and 200gr AccuBond? I have a good combination for a 180gr just looking for any ideas with the 200gr bullet. And if you are wondering why I am looking to go up to the 200gr bullet from the 180gr, is because I am shooting a BIG caliber I might as well shoot a BIG bullet. And I am thinking of going after bear this year and I think the bullet would be a nice fit.

[/b]

 

[remingtonman_25_06]

The 200g AB is a lot better bullet in the 300 RUM for longer range shooting then the 180g.. It can be pushed to 3200fps and with a .588 BC that equates to some serious firepower!!

I always used H-1000 and Retumbo for my 300 RUM, sorry no info for the 7828...

 

[FOTIS]

Cartridge : .300 Rem Ultra Mag
Bullet : .308, 200, NOS AccuBond 54618
Cartridge O.A.L. L6: 3.598 inch or 91.39 mm
Barrel Length : 26.0 inch or 660.4 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 81 74.40 2524 2830 32153 11482 99.4 1.723
-18.0 83 76.26 2586 2971 34426 11702 99.8 1.678
-16.0 85 78.12 2648 3113 36866 11886 100.0 1.634
-14.0 87 79.98 2708 3257 39484 12039 100.0 1.582
-12.0 89 81.84 2768 3403 42296 12183 100.0 1.531
-10.0 91 83.70 2827 3549 45320 12325 100.0 1.483
-08.0 93 85.56 2885 3697 48569 12463 100.0 1.437
-06.0 95 87.42 2943 3846 52062 12597 100.0 1.392
-04.0 97 89.28 3000 3996 55828 12728 100.0 1.349 ! Near Maximum !
-02.0 99 91.14 3056 4148 59832 12855 100.0 1.308 ! Near Maximum !
+00.0 101 93.00 3112 4301 64109 12977 100.0 1.268 ! Near Maximum !
+02.0 103 94.86 3168 4456 68684 13096 100.0 1.231 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 96.72 3223 4613 73582 13210 100.0 1.194 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 98.58 3278 4772 78832 13320 100.0 1.159 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 100.44 3333 4933 84464 13425 100.0 1.125 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 102.30 3387 5095 90512 13525 100.0 1.092 !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 93.00 3214 4589 78638 12566 100.0 1.171 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 93.00 2956 3880 50216 13579 100.0 1.401


Cartridge : .300 Rem Ultra Mag
Bullet : .308, 200, NOS AccuBond 54618
Cartridge O.A.L. L6: 3.598 inch or 91.39 mm
Barrel Length : 26.0 inch or 660.4 mm
Powder : IMR 7828

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 69.60 2529 2839 33888 11338 94.9 1.677
-18.0 79 71.34 2590 2980 36185 11656 96.0 1.634
-16.0 81 73.08 2652 3123 38633 11957 96.9 1.585
-14.0 83 74.82 2713 3270 41252 12238 97.7 1.537
-12.0 84 76.56 2774 3419 44044 12499 98.4 1.490
-10.0 86 78.30 2835 3570 47027 12738 98.9 1.445
-08.0 88 80.04 2896 3724 50196 12953 99.4 1.402
-06.0 90 81.78 2956 3880 53545 13144 99.7 1.361
-04.0 92 83.52 3015 4037 57106 13308 99.9 1.321 ! Near Maximum !
-02.0 94 85.26 3074 4197 60896 13446 100.0 1.282 ! Near Maximum !
+00.0 96 87.00 3132 4357 64932 13564 100.0 1.245 !DANGEROUS LOAD-DO NOT USE!
+02.0 98 88.74 3190 4519 69232 13678 100.0 1.210 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 90.48 3247 4682 73816 13787 100.0 1.175 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 92.22 3304 4847 78709 13893 100.0 1.142 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 93.96 3360 5013 83934 13994 100.0 1.110 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 95.70 3416 5181 89520 14091 100.0 1.080 !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 96 87.00 3246 4680 77594 13066 100.0 1.156 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 87.00 2961 3893 52433 13825 97.8 1.365


Cartridge : .300 Rem Ultra Mag
Bullet : .308, 200, NOS AccuBond 54618
Cartridge O.A.L. L6: 3.598 inch or 91.39 mm
Barrel Length : 26.0 inch or 660.4 mm
Powder : Alliant Reloder-25

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 78 71.20 2517 2813 32474 11254 99.1 1.717
-18.0 80 72.98 2576 2948 34696 11487 99.5 1.673
-16.0 82 74.76 2635 3084 37071 11692 99.9 1.629
-14.0 84 76.54 2694 3223 39608 11867 100.0 1.579
-12.0 86 78.32 2752 3362 42321 12018 100.0 1.531
-10.0 88 80.10 2808 3503 45223 12165 100.0 1.485
-08.0 90 81.88 2865 3644 48328 12308 100.0 1.440
-06.0 92 83.66 2920 3787 51617 12449 100.0 1.397
-04.0 94 85.44 2975 3931 55100 12586 100.0 1.356
-02.0 96 87.22 3029 4075 58803 12720 100.0 1.317 ! Near Maximum !
+00.0 98 89.00 3083 4222 62740 12850 100.0 1.279 ! Near Maximum !
+02.0 100 90.78 3137 4369 66929 12977 100.0 1.243 !DANGEROUS LOAD-DO NOT USE!
+04.0 102 92.56 3190 4518 71389 13100 100.0 1.208 !DANGEROUS LOAD-DO NOT USE!
+06.0 104 94.34 3242 4669 76139 13219 100.0 1.174 !DANGEROUS LOAD-DO NOT USE!
+08.0 105 96.12 3295 4821 81203 13334 100.0 1.142 !DANGEROUS LOAD-DO NOT USE!
+10.0 107 97.90 3347 4975 86606 13445 100.0 1.111 !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 98 89.00 3182 4496 75863 12460 100.0 1.186 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 98 89.00 2933 3821 49800 13418 100.0 1.407