I use a Ruger MKII .243 with 100gr Honady BTSP, leupold VXII 3x9. I would say my average has been just over 200 yards. The longest shot I have taken was 275 paces, the shortest was 90 yards. I will not shoot beyond 300yds ( I now have a range finder, no more guessing). I shot an antelope this year at 262yds.

Just shoot as far as you feel comfortable. If you can't practice long range shots (Say 300 yards) then stick to around 200 yards. Depending on the caliber you use anything you put the cross hairs on to 200 yards should be yours.

Hope this helps