I don't know if you bench twice a week, but if you do, here is something you might want to try.
Workout A (work capacity)
Work up to your 6RM for the day. From there you continue to do sets of 6 with 15 pounds less than your 6RM. Go until you cannot do a set of 6
1- 265 x 6
2- 250 x 6
3- 250 x 6
4- 250 x 6
5- 250 x 6
6- 250 x 6
7- 250 x 5 (you're done)
You can do that for any bench variation (flat, close-grip, incline, dumbell).
The do whatever other work you do, I would try to keep the volume/intensity a little lower than normal though because you are trying to focus on the bench.
Workout B (performance)
This is a little simpler. Work up to your 6RM for the day. Resting 3 minutes in between sets, continue to do sets with that weight until you can only complete 4 repetitions. So it might look like this:
265 x 6
265 x 6
265 x 5
265 x 4 (you're done)
And then do your normal workout, again with slightly less volume and intensity.
If you go three days a week, just alternate workouts. I bet after 6 of those workouts you'll be able to get 275 for 6 reps.