07-24-2011, 04:57 AM
Welcome, Colorado!
Regarding the "sweet spot," first, any caliber can have long, streamlined, high SD and high BC bullets. My opinion is that 6.5mm became a sweet spot because larger caliber bullets with the same SD and BC start to be heavier and generate more recoil than is desired. Yet smaller caliber bullets with the same SD and BC were traditionally less desirable for big game, four- or two-legged, and were unnecessarily light. Just a hunch. . .
John
Regarding the "sweet spot," first, any caliber can have long, streamlined, high SD and high BC bullets. My opinion is that 6.5mm became a sweet spot because larger caliber bullets with the same SD and BC start to be heavier and generate more recoil than is desired. Yet smaller caliber bullets with the same SD and BC were traditionally less desirable for big game, four- or two-legged, and were unnecessarily light. Just a hunch. . .
John