You'll be fine. If there's any chance of a miss caused by a poi difference, it'll be inside 15 yds. You can pretty well figure that at that distance, a turkey load and a cheap load will impact pretty darned close to each other. IF.. you are scoped with a high mount, your aiming point will be a little above your pattern for a short distance, which.. Won't mean a thing unless you try to shoot one mid gobble at 4 yards and you have the presence of mind to aim precisely at his eyeball.
To shorten it up,, go shoot turkeys.