I shot a bunch of 150gr reloads through my FAL last weekend, very similar to Stephen's load:
CCI "200" large rifle primers,
Hornady 150gr Interlock, spire point,
45.0 gr Win748
Bullets seated to cannelure
Average velocity (chrono'd) was about 2680 fps, from a 20" barrel. I consider these loads a bit light - but good for plinking - since "factory" and surplus 150gr ammo clocks in around 2712 - 2750 fps, and this is still a few grains under MAX, as listed in current Hornady and Speer books.