load data for 300wsm

[russ808]

Hi POP, can you send the load data for 300 wsm, using imr4350, 180 partitions, 24" barrel.
Mahalo Russ.

 

[steve4102]

Hey let me try! I have been using QL for 2 days now. I'm just getting the hang of it. Here is what I came up with assuming you are using 2.86 OAL and your brass has a volume of 80.0gr of water. Like I said this is all new to me, wait till POP posts to correct any of my mistakes.

Cartridge : .300 WSM (CIP)
Bullet : .308, 180, Nosler PART SP 16331
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : IMR 4350

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 77 48.00 2284 2086 28601 8169 90.7 1.626
-18.0 79 49.20 2338 2186 30398 8425 91.9 1.585
-16.0 81 50.40 2393 2288 32303 8674 93.0 1.546
-14.0 83 51.60 2447 2393 34325 8915 94.0 1.507
-12.0 85 52.80 2501 2500 36468 9147 94.9 1.470
-10.0 86 54.00 2555 2609 38749 9369 95.8 1.429
-08.0 88 55.20 2609 2720 41161 9581 96.6 1.389
-06.0 90 56.40 2662 2833 43737 9781 97.3 1.351
-04.0 92 57.60 2716 2948 46445 9969 97.9 1.314
-02.0 94 58.80 2769 3065 49297 10145 98.4 1.278
+00.0 96 60.00 2822 3183 52320 10306 98.9 1.244
+02.0 98 61.20 2875 3303 55524 10454 99.3 1.211 ! Near Maximum !
+04.0 100 62.40 2927 3425 58924 10587 99.6 1.179 ! Near Maximum !
+06.0 102 63.60 2979 3547 62533 10704 99.8 1.148 ! Near Maximum !
+08.0 104 64.80 3031 3671 66366 10806 99.9 1.118 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 66.00 3082 3797 70441 10890 100.0 1.089 !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 96 60.00 2944 3464 62202 10018 100.0 1.156 ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 60.00 2654 2816 42693 10076 93.6 1.359

 

[russ808]

steve4102, Mahalo much for the info.
russ

 

[Thebear_78]

I've had really good luck with the h4350 and Partition, 1/2" groups at 2925fps.

 

[russ808]

Thebear_78, What was your grain drop? I tried IMR4831 at 66 grains. The Accubonds and Ballistic Silver Tips were grouping .5 or a little less, and was very happy. The Partitions would be just over or just under 1". If I can get the Partitions to do the same I'd be very, very happy.

 

[big rifle man]

russ808, I've used 64 grains of IMR4350 (3025fps) and 64.5 grains (3050 out of my 24 inch barreled Kimber and gotten 5 shot 3/4" groups. Primer was a Federal 215M and OAL was 2.850. The .300WSM is an easy cartridge to work with and shoots well also with RE22. Velocity is just a shade less. Accuracy is right up with the 4350.

 

[Antelope_Sniper]

Might be tough russ. Partitions are usually a little more fussy.

 

[russ808]

Hey guys, thanks for all the insight. I'll load some up today and take them to the range on Saturday. Let everyone know how its come out.

 

[FOTIS]

Looks good! addicting isn't it???? :grin:

 

[russ808]

The quest for happiness and perfection is unending. Better than drugs, and not against the law.

 

[Thebear_78]

I found the sweet spot at 63.5gr of H4350. At 63gr it was a 3" groups, 63.5 dropped it down to 1/2" little cluster.

 

[russ808]

Thanks everybody for the infor. Wahoo!!! :grin: Came back from the range. Loaded up with 64 and 63.5 grains of 4350. 63.5 is the load. Got to show it to Thebear_78. Took a pic. Will try to download it tomorrow.

 

[russ808]

Thebear_78 and everybody else, thanks. :grin: :grin: :grin: [/img]

 

[JD338]

Outstanding!
Congratulations on a great group!

JD338