Woods, Don't be fooled into thinking a chrono will give ya all your answers. I bought my first a year ago or so. Thinking I cud shoot three shots and get a good average, etc , etc Come to realize from shot to shot the results vary and sometimes vary a lot , depending on powder used , primer , etc. I even measured out each individual load, inspected each and every round trying my best to be consistent. I was disappointed. Its not uncommon to find a 20 to 30 FPS difference in some loads, I just average it in. I generally throw out the two extreams , high and low and average from there. But I've grown to accept it ...I now shoot 6 to 8 rounds to get my "average" per load. My chrono data book is getting full of "per load , per gun , per barrel lenght , etc data. If I had it to do over again , not sure I'd even invest in a chrono....thats assuming ya don't experiment...get several good manuals , AVERAGE THEM , go from there. Don't think the deer are gonna know whether your bullets are traveling at 1100 or 1250 FPS.
excellent thread , good discussion
regards , irold