How does eye relief play a factor in using heavy recoiling guns? Knowing that most of you shoot some heavy guns and or pretty stiff recoiling guns, how do you determine how much eye relief you need. If I'm asking this wrong please correct me, never used scopes much just iron and peep sights to get the job done. I was taught the old fashion way use what you have and make the best of it. Teacher, I have a question!