Generally, factory rifle manufactures tell you to use quality factory ammo. I'd buy a box and see what happens. If it doesn't work right, send it back. The sooner the better. Sure there's some aggravation in waiting but I'm not sure it's more aggravation than 50 trips to the range and then sending it back or off to a gunsmith. Returning guns to Remington is becoming part of the Remington experience but it'll probably be fixed when you own it the second time.
It don't get no simpler than that.