Alliant 2400 Powder for .41 Mag

[lrp3006]

I just got a Ruger New Blackhawk revolver in .41 Magnum. I want to work up a load for 210 gr JHP bullets using Alliant 2400 powder (that's what I use for my .357 Mag).

The data in Nosler's RG #6 shows a min of 15.7 gr and a max of 16.7 gr. That differs quite a bit from the loads I see in my Sierra, Hornady, and Alliant Powder manuals.

Nosler 15.7 gr 1420 fps 16.7 gr 1500 fps
Sierra 16.6 gr 1000 fps 18.9 gr 1200 fps
Hornady 16.0 gr 1100 fps 20.0 gr 1350 fps
Alliant 17.5 gr 1425 fps

The reported velocities are all over the place too.

I think I'll start with 16.0 gr but have no idea what kind of velocity to expect.

Any other suggestions ?

 

[FOTIS]

Cartridge : .41 Rem. Mag. (SAAMI)
Bullet : .410, 210, Nosler HP 43012
Cartridge O.A.L. L6: 1.590 inch or 40.39 mm
Barrel Length : 6.0 inch or 152.4 mm
Powder : Alliant 2400

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 70 14.40 1104 569 19031 5877 73.3 0.761
-18.0 72 14.76 1132 598 20145 6110 74.6 0.742
-16.0 74 15.12 1160 627 21316 6344 75.9 0.724
-14.0 76 15.48 1188 658 22547 6579 77.1 0.706
-12.0 77 15.84 1216 689 23840 6813 78.3 0.686
-10.0 79 16.20 1244 721 25198 7048 79.5 0.667
-08.0 81 16.56 1272 754 26624 7283 80.7 0.649
-06.0 83 16.92 1300 788 28122 7516 81.8 0.632
-04.0 84 17.28 1328 823 29695 7749 83.0 0.615
-02.0 86 17.64 1357 858 31347 7980 84.0 0.599 ! Near Maximum !
+00.0 88 18.00 1385 894 33082 8210 85.1 0.583 ! Near Maximum !
+02.0 90 18.36 1413 932 34904 8436 86.1 0.568 ! Near Maximum !
+04.0 92 18.72 1442 969 36818 8661 87.1 0.554 !DANGEROUS LOAD-DO NOT USE!
+06.0 93 19.08 1470 1008 38830 8882 88.1 0.540 !DANGEROUS LOAD-DO NOT USE!
+08.0 95 19.44 1499 1048 40944 9101 89.0 0.526 !DANGEROUS LOAD-DO NOT USE!
+10.0 97 19.80 1528 1088 43167 9315 89.9 0.513 !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 88 18.00 1473 1012 39271 8726 92.2 0.538 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 88 18.00 1282 767 27190 7441 75.8 0.641

 

[lrp3006]

Thanks POP. I loaded 50 rounds tonight w/ Nosler 210 gr JHP and 16.0 gr of Alliant 2400.

I have a chronograph so I'll see what this load does in my 6 1/2" Ruger.

 

[FOTIS]

Great let us know.

 

[Antelope_Sniper]

My dad loads around 19gr behind a 210gr bullet in his .41 mag. It's a stiff load, so 16gr is probably not a bad place to work up from. There are alot of differenced between books. That's why we have so many and Chronographs. 8) Everything is just a big guess until you put some lead across the de-liar.

 

[lrp3006]

I ended up trying H110 because I wasn't happy with the accuracy I got with 2400.

I chrono'd (5) shots today with 19.9 gr of H110 and a 210 gr Nosler bullet - the average velocity was 1276 fps (min 1239 - max 1302).

The Nosler manual shows a velocity of 1590 fps at 19.9 grains of H110.

The Sierra manual shows a velocity of 1200 fps at 19.6 grains of H110.

The only difference I see is that Nosler used a 10" barrel in their testing while Sierra used a 6" barrel (mine is 6 1/2").