h 870 and wc 872 in 300 win mag

[abinok]

Any body using this combo with 220 or 240 gr bullets? I know that h870 was recently discontinued, but ive heard that the mil surplus wc 872 is a couple grains slower than 870. I will reduce the little bit of 870 data I have found for the old 250gr sirra as start data if it comes to that, but I figured id mine the brain trust here first.
Thanks everybody!