Im not trying to bust your balls just making sure you know what your getting so you can make an informed decision. The ruger american is pretty impressive for a budget deer gun.
You can zero it however you wish. But hunting guns should always be cold bore zeroed.
Cold bore zero means just that fire one shot. Wait 10 minutes. 20 if it is hot out. Fire another. Wait. Fire again.
Heat distorts bullet impact in any gun. How much depends on construction. After all your not going to sit in a hide blind stand shoot four or five times with the trophy in front of you, your going to fire one cold bore shot.
I see it all the time at the local range i attend. Just last weekend there was a father and son bitching about how crappy last season was, how many deer they missed, how crappy their brand new remington 700's were. What they were doing was firing 10-15 rounds in a row to zero. Group sizes started about 2" at 100 and opened up to 18+" due to heat and lack of skill.
I asked what they used last year. They traded off a pair of pre-64 model 70 winchesters in 30-06 their grandfather gave them. for two low end remingtons because the winchesters were shooting all over the paper...
A hunting barrel is a hunting barrel. Its for one cold shot at a time. You can shoot it faster to a point but its not what the gun is designed to do.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...