A new rifle... and you are sure it is not loaded. Put your finger by the nipple and blow with your mouth down the barrel. Now if there is any doubt that the rifle might be loaded, do not do that.
As for the ramrod, check the ramrod channel. Make sure there is no obstructions in the channel that is keeping it from going all the way down into the channel. If you have not cleaned the rifle yet, it might be full of packing grease and that is why the ramrod will not go all the way down the barrel.
Now understand that some rifles the tip of the ramrod still sticks out the end of the barrel. Even more so if you have a large cleaning jag on the end of the ramrod.