re: So protein has 4 calories per Gram...

250g of protein EVERY day is kinda hard on the stomach. Dunno how much you currently weigh but usually 1g - 1.2g of protein per lb of current weight is enough to gradually bulk with muscle.

So let's say you currently weigh 200lbs, you probably don't need more than 200-220g of protein and that's a shite ton, daily.
Canned tuna is probably the easiest way, if you like tuna. Usually 2 of those is ~50g protein and not too heavy on the stomach. I find I get sick quickly of chicken but 3-4cans of tuna every day or 2 is doable + other meals.