FYI just running the numbers on a 7mm 140 accubond vs a .277 140gr accubond, the numbers favor the .277 if both use a velocity of 3150. If we go to 3186 for the 277 and 3200 for the 7 the numbers still favor the 277with 1814fps and 1023fpe at 820yrds. The 7 @ 820 is 1798fps and 1005fpe. So why...