Recently picked up a Model 7 CDL in 350 Rem Mag. Read some good things about Ramshot TAC powder in the 350. Wondering if anyone has load data or experience using Sierra Gameking 225gn SBT’s. Or other load data for the Gamekings. Couldn’t find any for the 350 from Sierra.
350 Rem Mag and TAC?
- Thread starter Cletus26
- Start date
Code:
Cartridge : .[B]350 Rem. Mag[/B].
Bullet : .358, [B]225, Sierra SPBT[/B] 2850
Useable Case Capaci: 59.315 grain H2O = 3.851 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
[B]Barrel Length : 20.0 inch[/B] = 508.0 mm
Powder : [COLOR=#ff0000][B]Ramshot TAC[/B][/COLOR]
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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
-10.0 88 51.75 2309 2663 46532 7631 91.2 1.136
-09.0 89 52.33 2333 2720 47851 7727 91.6 1.123
-08.0 90 52.90 2358 2778 49214 7823 92.1 1.110
-07.0 91 53.48 2383 2836 50622 7917 92.5 1.097
-06.0 92 54.05 2407 2895 52077 8009 93.0 1.084
-05.0 93 54.63 2432 2955 53581 8100 93.4 1.072
-04.0 94 55.20 2457 3015 55136 8190 93.8 1.059
-03.0 95 55.78 2481 3076 56744 8278 94.2 1.047 ! Near Maximum !
-02.0 96 56.35 2506 3138 58406 8364 94.6 1.034 ! Near Maximum !
-01.0 97 56.93 2531 3201 60126 8448 94.9 1.022 ! Near Maximum !
+00.0 98 57.50 2556 3264 61905 8530 95.3 1.010 ! Near Maximum !
+01.0 99 58.08 2581 3327 63746 8611 95.7 0.998 ! Near Maximum !
+02.0 99 58.65 2606 3392 65652 8689 96.0 0.987 [COLOR=#ff0000]!DANGEROUS LOAD-DO NOT USE![/COLOR]
+03.0 100 59.23 2631 3457 67626 8766 96.3 0.975 [COLOR=#ff0000]!DANGEROUS LOAD-DO NOT USE![/COLOR]
+04.0 101 59.80 2656 3523 69670 8840 96.6 0.964 [COLOR=#ff0000]!DANGEROUS LOAD-DO NOT USE![/COLOR]
+05.0 102 60.38 2680 3590 71788 8912 96.9 0.952 [COLOR=#ff0000]!DANGEROUS LOAD-DO NOT USE!
[/COLOR]
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 57.50 2675 3574 71689 8606 99.1 0.955 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 98 57.50 2407 2894 52547 8126 88.6 1.079
Maybe Quickload's default case capacity of 72 grains h2O for the 350RM is conservative? 62grs TAC under a 225gr TSX @ 2.8" would be 114% load density, according to QL
To get 103% LD, case capacity has to be increased to 77.75grs h2O (8% increase). Maybe measure some of your fired casings to see how much water they hold. Weigh fired cases empty, fill with water to the top, and weigh again. Subtract the difference in weight to get the net h2O capacity
QL suggests only 2500ish FPS will be made with TAC w/ 225gr TSX from a 20" barrel, not sure how Barnes is getting 2764 fps. That is basically 24" 338 Win Mag velocity
To get 103% LD, case capacity has to be increased to 77.75grs h2O (8% increase). Maybe measure some of your fired casings to see how much water they hold. Weigh fired cases empty, fill with water to the top, and weigh again. Subtract the difference in weight to get the net h2O capacity
QL suggests only 2500ish FPS will be made with TAC w/ 225gr TSX from a 20" barrel, not sure how Barnes is getting 2764 fps. That is basically 24" 338 Win Mag velocity
I dont have my notes handy, but i believe i used 4320 in mine. Great cartridge. Particularly in a Mauser length action, will exceed 35 Whelen ballistics. - dan
WW 748 powder is Excellent in a 350 Rem Mag - RJ
Finally got time to test for pressure. Was able to exceed 62 gr of TAC behind a 225 SGK at 2.800 coal. Accuracy node seamed to be around 61 grains. At 61.5 and up each .2 gr increase started being way high followed by way low. Have 5 groups of 5 built at 60.8-61.2 at 0.1 grain increments. Hopefully get back out in 2 weeks to test them.
It's easier to just zero the scale with the case. If it reads "xx.xx" grains then that is the capacity. I see he only did one, it's wise to average at least a few. Stuff like that can really dial in the accuracy of loading programs.
Just a note on the Sierra GK in 35cal, I have tried them in a 35 Whelen and in a 358norma.
They were exceptionally explosive.
Like throwing a hand grenade in the chest of a white tail doe explosive.
Since changed to 250GR Hornady Interlock and 200gr accubond.
Just my observations.
I would not run them again after 2 deer and one moose, it was the exact same results. Dead animals but lots of meat loss.
They were exceptionally explosive.
Like throwing a hand grenade in the chest of a white tail doe explosive.
Since changed to 250GR Hornady Interlock and 200gr accubond.
Just my observations.
I would not run them again after 2 deer and one moose, it was the exact same results. Dead animals but lots of meat loss.
Interesting. I have 225gr Nosler partitions as well. I originally thought I had an accuracy node at 56.2gr when I had my max test string at 58 gr. Made 5 of each SGK and NP’s at 56.2gr of TAC. Accuracy of both was around 2moa a 100yards but identical POI. My plan was to use SGK for deer and the Partitions for larger game. Might just use the game kings for target practice and the Partitions for all hunting application if the POI and accuracy is the same or similar enough at the final load.
I use either 225 gr Noslers or 250 gr Hornadys in mine. Loaded out long, it's actually a little faster than my 35 Whelan was. Those bullets are good on game. It's not a long range rig though, but you're certainly good out to 250-300 anyway. - dan
I have some loaded up with W748 to test as well. Seemed to be about 1.5-2” was about the best I was finding with TAC. Speed was around 2700-2750fps but would like a little tighter group if I can.
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When I had my M600 it absolutely loved...a full charge of IMR-4320 over a 250gr Speer Spitzer.
Would do sub MOA if shooter could hang onto the recoil...lol.
That combo was the "hammer of Thor" on Moose....and very little meat damage surprisingly.
Would do sub MOA if shooter could hang onto the recoil...lol.
That combo was the "hammer of Thor" on Moose....and very little meat damage surprisingly.
