You sound a lot like me...
I bought a Hornady Cam-Lock case trimmer when I started reloading over 6 months ago. Bought 500 pieces of brass to start, and was kinda surprised that it didn't grow much, even after three or four reloads. When it started to get near the 1.76 max I bought some more brass...and have another hundred coming UPS tomorrow to get me through the weekend.
Anyway, I'm finally down to the point where I actually have to use it (trimmer, that is). Getting all my brass the same length will probably increase my accuracy as well. I haven't used it yet- but this might be what you're looking for, and they have a drill adapter for it: