D W M ''Karamajio'' Bell was a world famous elephant/lvory hunter. l think he killed close to a THOUSAND with his .275 Rigby(7x57Mauser) and 6.5Swede. After retiring from the lvory Trade he went back to his native Scotland. There he hunted mostly Red Stag/Roe Deer. His favourite deer zapper was a Winchester bolt gun in 220Swift shooting factory 45gr Soft Points @4100fps. He said the 220 Swift was like a bolt of lightning, the Hammer of Thor on Red Stag and Roe Deer. 4100fps is almost 3000MPH. That's X15 Rocket Plane speed!! While in New Mexico a couple weeks past our Prairie Dog outfitter remarked he had never seen BIG prairie dogs cut in HALF like l was doing with 40gr BlitzKings @3700fps from my 223Rem. My partner was shooting 55gr VMAX @3300fps. He wasn't blowing them up the way I WAS. l know bullet construction counts quite a bit in performance. Nothing compares to ''S P E E D''