338 300 gr accubonds and custom competion any one use them

[dgr416]

I am trying to see if anyone has used Nosler 338 300 grain accubonds and 300 grain custom completion .I will be using them in my 338-378 Weatherby.I used serria match kings 300"grain with reloader 25 .I am going to try wc867 powder abd h870 because I have some of both .I have never hunted with over 250 grain bullets in the 338 win mag or the 338-378.Just trying to see if anyone else has I know there are some 338 -378 shooters on here !