Home Forums Reloading Big Game Rifles 280 Rem, Varget and 140gr TTSX data needed

Greetings,

Loading for a buddy. Need a starting point for powder and a COAL. Any help appreciated...

280 Rem
140gr TTSX
Varget
Winchester LRM

Cartridge : .280 Rem.
Bullet : .284, 140, Barnes 'TTSX'BT 28474
Useable Case Capaci: 59.010 grain H2O = 3.831 cm�
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon VARGET

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 73 38.40 2331 1689 32168 8528 93.9 1.398
-18.0 75 39.36 2383 1765 34023 8770 94.8 1.366
-16.0 77 40.32 2434 1841 35978 9005 95.6 1.336
-14.0 78 41.28 2485 1920 38037 9232 96.4 1.307
-12.0 80 42.24 2536 1999 40206 9451 97.1 1.279
-10.0 82 43.20 2586 2079 42490 9660 97.7 1.251
-08.0 84 44.16 2637 2161 44895 9859 98.2 1.222
-06.0 86 45.12 2687 2244 47427 10048 98.7 1.190
-04.0 88 46.08 2737 2328 50095 10225 99.1 1.160
-02.0 89 47.04 2786 2413 52905 10391 99.4 1.131 ! Near Maximum !
+00.0 91 48.00 2835 2499 55866 10544 99.7 1.102 ! Near Maximum !
+02.0 93 48.96 2884 2586 58986 10684 99.9 1.075 ! Near Maximum !
+04.0 95 49.92 2933 2673 62277 10811 100.0 1.049 !DANGEROUS LOAD-DO NOT USE!
+06.0 97 50.88 2981 2762 65747 10925 100.0 1.023 !DANGEROUS LOAD-DO NOT USE!
+08.0 99 51.84 3028 2851 69410 11030 100.0 0.999 !DANGEROUS LOAD-DO NOT USE!
+10.0 100 52.80 3075 2940 73277 11132 100.0 0.975 !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 91 48.00 2934 2677 64521 10248 100.0 1.034 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 91 48.00 2696 2259 47261 10457 96.1 1.190

Based on this quickload data, you can get better velocities with an number of slower powders.

Yeah h4831, rl22 to name a couple

You might want to ask your buddy why Varget? Is that all he has? That is a lot faster than any powder I would want to use for that combo.

As far as data goes, Hodgdon does have a web site. He probably should check there first.

52gr of IMR 4350 is my load in the .280 with 140 TTSX's. Velocity is a tad under 3000fps, very accurate. I don't think Varget is your friend for this load.

I know you probably have the 140s, but you're better off with the 120 TTSX and about 3-400 fps gain. Nothing the 140 will do the 120 can't.

If you ain't shootin RL19 W/140's in a .280...you ought to be. powdr

As some have said, Varget is too fast for a .280, better in a 7-08. It's also a lot harder to find than 4831 or RL19 and 22.

Yep, I've generally done best with IMR 4831 or RL 19. I can get the 120s to scoot to about 3300 with Hunter or Magpro though.

55 gr H4831SC with 140 Accubond
52 gr IMR4350 with 140 Accubond
58 gr IMR7828 with 150 Partition

Weatherby Mk V UL in 280 Remington

Just tried this load:
57 gr H4831SC, 140 Tsx, Rem brass, Rem primer
2,870 with no pressure signs. 24" Dan Pederson barrel with a long throat. All my H4831 loads have been just a bit better than IMR 4350.

Thanks guys, for some reason I'm not getting notifications when posts are added.

Anyways, he was going to use Varget because it was on hand. I'll convince him to get some RL19 and try it instead.

Good choice.