Anyone know the difference between these two; beside head size?. List in Pyramid air and gun depot.https://www.pyramydair.com/product/h-n-field-target-trophy-177-cal-4-52mm-8-64-grains-round-nose-500ct?p=841https://www.pyramydair.com/product/h-n-field-target-trophy-177-cal-8-64-grains-domed-500ct?p=33