Bah you are acting like a total pussy now. There is no way in hell 300 should have buried you.
You need to start handling weight! Somebody said said something about Kai green not lifting heavy. Bull shit! I mean total bull shit! Look at this.
Kai Greene 495-pound incline bench press (2011) - YouTube
Branch warren chest training - YouTube
To get big you have to lift big. It is impossible to get big and strong by doing low weight more reps. You need to do some warm up and build your way up to low reps big weight. If you can do 225 for 15 do this program and I promise you will bench 350 in 6 weeks.
135 x 15
135 x 8
155 x 6
185 x 5
225 x 5
255 x 3/4
275 x 2/3
295 x 1/2
300 x 1
275 x 2
225 x failure
The first 3 sets are warm up so don't give me no shit about that being too many sets. Bench squat and dead are all compound lifts meaning they work more than one or 2 body parts. You need to work on arching your back with a nice tuck of the legs. You also need to pinch the shoulders back and set the weight down so it feels like it drops 2-4 inches before you start. Keep your shoulders tucked.
Keep adding more weight weekly and maybe a rep or 2 on the 225 and the 275 and 295.
Don't do any force reps either. I try my hardest to never ever miss a weight. The gym I used to train at had some of the strongest people in the world. We had geared and raw lifters too.
I never hardly ever go over 8-10 on any set. If I can I am not lifting heavy enough.
You need to force the muscle to grow by tricking into thinking it is going to fail if it doesn't. Muscle's are like blisters. Keep tearing them down and eventually they will callus.
This works for myself and most of the strong guys I lift with.