Only bench press workouts? Sounds kinda weird.
But yeah, 275 lbs is a pretty nice bench so I guess you know what has worked for you before.
I got my best gains on chad waterburys 25 rep method which is whole body workouts 3 times a week I think, of which the chestwork is 25 total reps in whatever amount of sets with quite short rest and where each set is ended as soon as you start losing speed on the lifts, benchpress on one day, incline bench on another one and dips on a third.
Guess it's not that weird that doing something like 4,4,3,3,3,3,2,2,1 reps of benchpress one workout, same amount off inclines another day and same amount of dips yet another day where all lifts are as explosive as possible increase strength.