My first centre-fire rifle was a Lee-Enfield No4 Mk1 that I bought not even a month ago.
I want more.... Maybe a No4 Mk2, or a No III Mk1..... perhaps a Lithgow with a sword bayonet... then maybe a Longbranch....
You can see where this is going.
Trust everyone here when they say that this stuff is addictive. It's a joy to shoot but ammo isn't cheap. Don't go to big box stores (Wal Mart, Crappy Tire, etc) looking for ammo, you will only find the expensive hunting stuff. Go to a gun-shop and ask for .303 FMJ. I buy Sellier & Benoit (Czech FMJ) for $15.99 a box. When I have the time, reloading supplies will come next.
In the meantime, a Mosin Nagant will have to suffice for when I want to shoot lots of rounds as plenty of cheap surplus is available.
I don't think any of my centre-fire's are going to be younger than 40 years old for the forseeable future.