AR-Tactical loads Brought to you by www.LoadData.com apparently the parent company is Wolfe Publishing Company They publish Rifle magazine and Hand Loader Magazine. When I bought current issue of Hand Loader Magazine it was wrapped in plastic with this 10 page data collection together. It has 6 cartridges load data all chambered in the AR-15 plat form. 223 6.5 Grendel,6.8 SPC .450 Bushmaster,458 SOCOM,.50 Beowulf. I just think they're listing of 3,160 for a 65gr bullet is way to high out of a 20" BBL.