-I'm new to guns in general and even newer to handguns
-This is my first firearm
-I have no idea what I'm talking about so correct me if I'm wrong

So I bought my S&W 1911 about mid-July. It was pretty stiff (slide and hammer, assembly, disassembly, etc.) and the clerk figured it'd get some wear after the first month or two and feel a little bit more relaxed, and it did, sort of.
Now, coming on three months later, it's still very stiff compared to other handguns I've fired since then. I've put about 500 rounds through it and have noticed only minor differences from the new feel to what I feel now. Racking the slide still requires a considerable amount of force (10-20 lbs), and while field stripping and reassembling the slide will be very hard to put on or take off. I do maintain it quite well, cleaning it after shooting, lubricating moving parts, etc.
Should I expect more wear and tear (the good kind) to loosen it up or will I have to live with it? (do-able, just curious)