Considering the price of a top quality AR you aren't that far off dollar wise.
I like the .338. I'v eonly shot the it from a bolt gun before. The .338 AR is a monster. Depending on what your using it for and the disposable dollars you have I say go for it.
As to reloading. It's a myth you will save any money. You just wind up shooting more and doing it more accurately...trust me on that.
Every Saint has a past...every Sinner a future.