Two of my favorites are Terry Wieland and Ross Seyfried. Seyfried writes interesting stuff on shotguns and rifles and his older stuff he did with handguns is great. They both write accurately. Brian Pearce from Handloader writes interesting stuff. He writes about hands on stuff that he's used with success over the years as a rancher/hunter. He knows what works and doesn't work. Lastly John Taffin. He's a legend!!!