Grendel vs 308

[SHORT-N-SASSY]

Somehow your charts are not real. There is no way my 308 is going to get 1241 fps at 1000 yrds at sea level. With the atmosphere you have there knock off 100fps at 1k.

[SIZE="3"]The "charts" you refer to are the results from dialing-in the default values, for Temperature (59 degrees) and Altitude (0 feet above sea level) provided in the Hornady Ballistics Calculator Page.

The results, below, using the Handloads.Com Ballistic Calculator, use the same values for Temperature and Altitude (NOTE: The .308 175-grain SMK Ballistic Coefficient, 0.496, is used in both programs, as well):[/Size]