I knew that his Springfield was made & chambered in the original 30-03 , which had a longer neck and a 220gr bullet around 2300. He mentions in his "African Game Trails" that from time to time he would use the "military pointed spritzer" ( the 1906 round, shorter neck, 150 at 2700fps) several times but gives no detail on his 220gr. I can't find any info so does anyone know if his 220gr bullet was a fmj, cupro nickel jacked round nose or a soft nose? I can't imagine him using that 150 fmj on elephant, though he did use it on rhino!