I have not personally tried this ammo, but I've heard at least one report that expressed disappointment at this load. Frankly, its hard to imagine the purpose of slowing down the old 30 with this heavy of a bullet.
Right now we have the best bullet technology available. If you need to shoot factory loads look for Federal-they load either the Barnes or the Nosler right now-either are fantastic bullets. Winchester has a new bonded core 30 WCF load out, and Grizzly loads the Hawk premium soft point. Any of these choices will greatly improve the performance of the 30WCF.