280 Rem with Rl 23

[hankhunter]

Just found a couple of pounds of alliant rl23 and would like to try it in my 280 rem with 150 gr ballistic tips or partitions. Not much for data out there, anyone here worked with it and have some pointers. Thank you

 

[DrMike]

Haven't tried it in either of my 280s as I haven't had need to this point. However, it looks as if it would work very well. For instance,

Cartridge          : .280 Rem.
Bullet             : .284, 150, Nosler BalTip 28150
Useable Case Capaci: 60.002 grain H2O = 3.896 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-23 *C *T

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   97    52.56   2615    2277   40825  11328     99.2    1.300
-09.0   98    53.14   2645    2329   42245  11423     99.4    1.279
-08.0   99    53.73   2674    2382   43713  11512     99.6    1.259
-07.0  100    54.31   2704    2436   45236  11594     99.8    1.239
-06.0  101    54.90   2734    2489   46819  11669     99.9    1.219
-05.0  103    55.48   2763    2543   48461  11736    100.0    1.199
-04.0  104    56.06   2793    2598   50167  11796    100.0    1.181  ! Near Maximum !
-03.0  105    56.65   2822    2652   51937  11849    100.0    1.162  ! Near Maximum !
-02.0  106    57.23   2851    2707   53778  11901    100.0    1.144  ! Near Maximum !
-01.0  107    57.82   2880    2763   55692  11951    100.0    1.126  ! Near Maximum !
+00.0  108    58.40   2909    2818   57681  12000    100.0    1.108  ! Near Maximum !
+01.0  109    58.98   2938    2874   59748  12048    100.0    1.091  !DANGEROUS LOAD-DO NOT USE!
+02.0  110    59.57   2966    2931   61900  12095    100.0    1.074  !DANGEROUS LOAD-DO NOT USE!
+03.0  111    60.15   2995    2987   64140  12142    100.0    1.057  !DANGEROUS LOAD-DO NOT USE!
+04.0  112    60.74   3023    3044   66472  12187    100.0    1.041  !DANGEROUS LOAD-DO NOT USE!
+05.0  113    61.32   3051    3101   68901  12231    100.0    1.024  !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    108    58.40   3028    3053   71368  11530    100.0    1.020  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    108    58.40   2727    2477   45850  12311     97.9    1.223

 

[hankhunter]

Thanks DrMike,
Now I can get started.

 

[JD338]

Nice. That data looks pretty good.

JD338

 

[SJB358]

RL23 was a slow start for me. I got 8 lbs of both 23 and 26 about 5-6 years. I never touched 23 till this past year. Well I’ll be darned if it doesn’t work really well and only seems to lag about 50 FPS on average to 26. It’s been very nice. Nice wide velocity nodes and not squirrely. It’s been a speedier version of H4831 in my use.

 

[M1Garand]

One of these days I gotta get some RL23, I'll be interested in how it does in your 280.