After trying some more 180gr accubonds this morning with the new batch of reloader 25 I have finally been able to get three shot groups to average 3/4" in one of my ultramags.The charge weight was 92gr and the velocity 3350fps.As such,I will probably be trying them in this rifle this fall for elk.The other rifle still averages 1" or more so it will still be shooting 180gr ballistic tips this fall.I have never witnessed a split neck with my ultramags.