Just curious. Is there a spreadsheet or a calculator I can download. I have drops and bullet info (165 IB's .308 win). Thanks in advance. Matt

Post the drops here and we'll (someone) give you a lesson in figuring it out. Include your 100 yard zero differential (point-of-aim to point-of-impact difference).

I use www.biggameinfo.com then go to ballistic calculator. Enter your data in and it will compute it out for you. Pretty easy...