It worked great in 7 Rem Mag, 300 WM and 338 WM with heavies (7mm 175 smk, 30 cal 180 NBT/Hornady Inter-lokt, .338 cal 200 Speers), but velocity was low for these rounds. Too slow to be really efficient, but like I said, superb accuracy in my rifles.
I have used alot of 8700 in my Allen Magnums, especially before I started using WC872.
Most lots I have used have been slightly faster burning then H-870. Generally I reached same velocity with one or two grains less powder. This is in a 100-110 gr powder capacity round so its pretty damn close, within 1 or 2 percent of H-870.
I did however run into one lot that was Dramatically faster burning. Roughly the same as Retumbo. IT was a real joy to start this lot of powder after using the slower stuff. I always drop four to five grains off my load with a new lot of powder. Still I opened a couple primer pockets before I figured things out.
This was the reason for the change to WC872.
8700 is still a good powder, a bit temp sensitive but so is 872 and 870. I suspect the fast lot I got in was not stored properly which resulted in the faster burn rate.
Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.
Thanks 89 and 50 I hope the bottles I have are a bit faster
but like you know can't tell until you test fire.I found a lot of difference in H870 in shooting the 300SMK in my .338/300 the case would hold several more grains at times??? The very big pills are my interest with this powder and I don't care if the vel is a little slower...