Anyone have any loading info with these powders. Going to try them in a 264 Win.

Tjay I have never used WC 872 so I have no experience with it. I do have a keg of WC867. I have found it to be very close to MagPro. One of the burn rate charts I have lists Magpro, H450 & W785 powders in order for burning speed. WC872 is slower than 867 so it may be better suited to the 264 certainly with heavier bullets.

Thanks snowman. It will be interesting to work with these powders.

I have used WC872 in many calibers 300 wby to 50 bmg. My lots seem to burn about like H-870. Start low work up and have fun.

Jason

My lot of WC872 is about 10% slower the H870. As you can see, Jason's is quite a bit different then mine, so like he said, start low and work up. I don't recommend using surplus powder unless you have a chronograph, so you can get some kind of an idea what coming out the barrel.

Thanks to all.

I do have a chrono and am well aware of lot to lot variation.

T Jay. If it was my modern bolt action rifle, chambered in .264, I would start with WC860, BUT, if I all I had was WC872, here where I would start:

Cartridge : .264 Win. Mag.
Bullet : .264, 140, Speer SP 1441
Useable Case Capaci: 77.010 grain H2O = 5.000 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Hodgdon H870

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.667% 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

-06.7 95 70.00 2883 2584 43827 14369 96.6 1.504
-06.0 96 70.50 2907 2627 44905 14475 96.9 1.486
-05.3 97 71.00 2930 2670 46007 14577 97.3 1.470
-04.7 98 71.50 2954 2713 47133 14676 97.5 1.453
-04.0 98 72.00 2978 2757 48285 14772 97.8 1.437
-03.3 99 72.50 3001 2800 49462 14864 98.1 1.420
-02.7 100 73.00 3025 2845 50669 14953 98.3 1.404
-02.0 100 73.50 3049 2889 51906 15037 98.6 1.388
-01.3 101 74.00 3072 2934 53175 15118 98.8 1.373 ! Near Maximum !
-00.7 102 74.50 3096 2979 54475 15195 99.0 1.357 ! Near Maximum !
+00.0 102 75.00 3119 3025 55808 15268 99.2 1.342 ! Near Maximum !
+00.7 103 75.50 3143 3071 57175 15337 99.3 1.327 ! Near Maximum !
+01.3 104 76.00 3166 3117 58576 15402 99.5 1.312 ! Near Maximum !
+02.0 104 76.50 3190 3163 60014 15463 99.6 1.298 ! Near Maximum !
+02.7 105 77.00 3213 3210 61489 15519 99.7 1.283 ! Near Maximum !
+03.3 106 77.50 3237 3257 63002 15571 99.8 1.269 !DANGEROUS LOAD-DO NOT USE!


QL suggests 77 grains a max for H870, so I would back off 10%, to 70 grains, and work up from there. I'd watch my pressure signs and my chrony to decide if that got the job done for me. If you have a slow lot, it could take quite a bit more to get the job done. You and your rifle will have to decide the best place to stop.

I would also use Fed215 primers. The slow WC ball powders seem to like them and not much else.

I would start with something like the speer 140, just because there's no reason to use expensive bonded lead while figuring out your general pressure/velocity ranges. Once your in the ball park you can use the expensive stuff to dail it in.

I've been shooting a .264 since 1964 and in recent years have used WC 872 exclusively. The lot I use is significantly slower than H-870.

Given that it is a "surplus" powder and that people dealing in "surplus" powders sometimes take a bit of license in desribing their merchandise, it is very important to treat it cautiously until its actual burning rate can be established.

If the lot you use is anywhere close to my lot in performance, then you will find rather low velocities with H-870 loads and won't approach optimal velocities until going some significant percentage higher in weight. How much you can use also depends on the throat of your rifle since many .264's were chambered with the SAMMI-standard zero leade and won't digest nearly as much powder.

In my rifle, and with my lot of powder, a full case, slightly compressed, lauches a 140 grain Nosler Partition at 3150 fps from a 24" barrel with sustainable pressures. "Your mileage WILL vary", so take care.

Thanks to all.

Off to deer camp Thursday for 20 days. It will be a while before I get to load some.