Hunting loads for 280 Rem

[SJB358]

My latest .280 responded to 150-grain Partitions first, so I've stuck with them. I don't see how you can go wrong with anything from 139 grains to 160 grains!

I am going to give the 150 PT's a shot in my son's 7mm Mauser. Speeds look real good too. Not quite a 280, but it should make a spike elk capable load if the bullet shoots decent.

Cartridge : 7 x 57 mm Mauser
Bullet : .284, 150, Nosler PART SP 16326
Useable Case Capaci: 53.155 grain H2O = 3.451 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-17

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 79 40.80 2344 1829 31617 9395 95.2 1.441
-18.0 81 41.82 2403 1923 33772 9661 96.2 1.401
-16.0 83 42.84 2462 2018 36077 9909 97.2 1.363
-14.0 85 43.86 2520 2116 38543 10140 98.0 1.322
-12.0 87 44.88 2579 2215 41184 10350 98.6 1.281
-10.0 89 45.90 2637 2316 44014 10540 99.2 1.242
-08.0 91 46.92 2695 2419 47050 10707 99.6 1.204
-06.0 93 47.94 2753 2524 50307 10850 99.9 1.167
-04.0 95 48.96 2810 2630 53805 10969 100.0 1.132
-02.0 97 49.98 2867 2737 57567 11066 100.0 1.098 ! Near Maximum !
+00.0 99 51.00 2923 2845 61617 11157 100.0 1.065 ! Near Maximum !
+02.0 101 52.02 2978 2954 65981 11244 100.0 1.034 !DANGEROUS LOAD-DO NOT USE!
+04.0 103 53.04 3033 3064 70692 11328 100.0 1.003 !DANGEROUS LOAD-DO NOT USE!
+06.0 105 54.06 3088 3176 75783 11407 100.0 0.974 !DANGEROUS LOAD-DO NOT USE!
+08.0 107 55.08 3142 3289 81294 11482 100.0 0.945 !DANGEROUS LOAD-DO NOT USE!
+10.0 109 56.10 3197 3404 87268 11553 100.0 0.918 !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 99 51.00 3033 3064 75322 10709 100.0 0.987 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 51.00 2753 2524 49719 11463 97.9 1.169

 

[6mm Remington]

My latest .280 responded to 150-grain Partitions first, so I've stuck with them. I don't see how you can go wrong with anything from 139 grains to 160 grains!

Amen to that! Perfect bullet weight range for anything .280 or .280AI! 8)

I am going to give the 150 PT's a shot in my son's 7mm Mauser. Speeds look real good too. Not quite a 280, but it should make a spike elk capable load if the bullet shoots decent.

I have to disagree with that Scotty. The 150 gr. Partition at those speeds would be lethal on any elk, no matter what their size. They are an incredibly tough animal as you know, but non of them are bullet proof. :wink: That 7x57 is a great round.

 

[lhsako]

Based on what I have on hand I've decided on two loads for Montana this fall. I have a good supply of both bullets on hand.

great accuracy !!!! what are those loads clocking on the chrony?

 

[JD338]

JD, what bullets are you using in that 280Rem, are they the AccuBond?

Blessings,
Dan

Dan,

In the 280 Rem it was 140 gr BT and 140 gr PT.

JD338