I bought a new Savage Mod 10 FCP HS Precision in 308. The first cold bore shot is between 2885 and 2875 and the next four shots split hairs with 2846. This is the only factory rifle I own, none of my customs cold bore shot is any differ through the chrony. I did break the bl in and have about 50 more rounds down the tube. It doesn't make any differ clean or little dirty always around 40fps higher. I guess my question is should i make a drop chart with cold bore bullet speed or just average of the five shots like the others.