Rolly,
<br>There really isn't any one partucular thing that would throw your bullet path off substancially as far as conditions( considering your hunting the same general area) Now from PA to say Colorado, Now you have major changes. Usually it consists of a change of several conditions to really bugger things up. But what we do is WATCH the weather conditions and LOG avg. from year to year. This will establish a base or starting point for your particular area. Check your different hunting locations on your topo maps for elev. ( We have spots that range from 700ft to almost 2000ft and we have different click charts for each spot. If you are ever in doubt about things as far as cond. changing your impact point FIRE A SPOTTER ROUND and then make adj. I hope this helps!
