Next Monday will be the last week of the maximum strength phase of this year's weight lifting program. Last week I got up to 6 reps of 270 pounds (not including the bar, which weighs something like 35 pounds). So I've surpassed my goal of lifting 280 for one rep. My previous max of 320 pounds also appears to be well within reach.
Sometime during next Monday's workout I'll do a couple one rep lifts and see just how much I can lift. The weight you can do for 6 reps should be something like 80% of your max, so I ought to be able to do something like 325 plus the 35 pound bar = 360. Hopefully I'll have my crack spotter on sight just in case something goes wrong.
Once the maximum strength phase completes things will move to the strength maintenance phase, where the goal is to hold the strength gains of the past couple months through the rest of the racing season. I'll go back to 3 or 4 sets, doing 10 to 12 reps.
Here's a chart that shows my weight buildup for squats over the past couple of months (click it for a larger image). Note that the number of reps per set has been decreasing, while the weight per rep has been increasing.