Winchester white box Value pack 45gr JHP is the favored factory load for most here. Sub moa is common with this ammo. I've also had almost as good accuracy with the Ultramax 40gr nosler ballistic tips. The winnys cost less, though and shoot better by a touch for me. I've read of more that one shooter here that chose the winnys as good if not better than their handloads. My best 3 shot 100yd groups with the winny have been .265 and .440 ctc. The Umax is ~.6 or so ctc.