I am having problems with my Sig 2400. The drops are way off compared to my kestrel and actuals. Can somebody tell me the answer to a few questions? Do you have to do the a Ballistic Calculation before you can use the Temp Table? If you can use the Temp Table WITHOUT Ballistic Calculation, do you input the Temperature of the Speed you zeroed with? I can't understand how if you don't use the Temp Table how the Sig can workout drops when there is nowhere to put in a Temperature for the muzzle velocity in section in the gun profile build section?