I know i have none of the dlc either but the original maps are more for close combat weapons then anything.
yeah that's true. there are some places where you can snipe well on Jungle, Array, Havana, Launch and even Nuketown, you just need to set yourself up aiming at an area that you know enemies will walk by. it helps if there's cover where you're aiming, because
they always hide behind cover and stand completely still.
If you know how to do it right, then you can snipe on just about any map.
But, I guess in this case you're looking for somewhere to get started. I'd suggest Array, Jungle, Berlin Wall, and probably even Convoy (between hard scopes and quick scopes you can get 15 kills in a round of TDM on that map).