saturno v..Don't know where you're getting the 6.5x55 SD numbers from. All 140gr bullets that I'm familiar with have SD numbers over .400. Federal .440, Remington .436, Norma .467 etc..
Water Man
I could ask the same thing....
I got my numbers from Hornady, Woodleigh, Sierra and Nosler....check them out
http://www.woodleighbullets.com.au/
www.hornady.com
www.sierrabullets.com
www.nosler.com
I think you may confusing the Ballistic Coefficient with Sectional Density....
Even the 200 gr. 30 cal. bullet (SD .301) has better SD than the 140 gr. 6.5, and the 220 and 240 gr. 30 cal. have better SD than the 160 gr. 6.5 pill
So the 30-06 can hit the target with higher SD bullets and, on average, 50% more muzzle energy than a 6.5x55 (~3000 ft/lb for the 30-06 vs. ~2000 for the 6.5)...you do the math....
Do not get me wrong, the 6.5x55 is a great cartridge but the 30-06 is in a very different performance class....
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