358429 .. that's the 170 grain mold? I wonder if it could be a twist issue. I remember Veral Smith writing about selections of one of his designs .. LFN over WFN .. if range was over something like 50 or 75 yards. I think the issue was marginal twist and a possible answer is more velocity. So .. not sure what max is for 2400 with those 170s, but maybe switch to Win 296 and push the throttle a little bit farther. .. a guess, something to try, with no promises made.
Tom
