How old are you? Testosterone? Caffeine usage?
I have a feeling this thread will turn into a "deadlift is useless" thread. As long as we stay on topic and keep Neil out of here I think we'll be fine though.
You can 100% make progress doing 10-15 reps of a lift IF you plan well and are working in the 2-3 rep range. Let's decipher what's going on, here's your last OHP session:
Quote:1 x 4 x 115
3 x 4 x 125
4 x 3 x 130
4 x 3 x 135
Mentally where were you at? 135 was a "PR," but look, you did FOUR SETS of 130 before moving up to 135. What were you trying to do? Warm up? Is that part of the program? I know it's OHP and 5 lbs can make a difference but my point stands, you did 12 reps at 125, added 5 lbs (total, not on each side), did 12 more reps, then repeated. After that first set of 130 you should be able to tell how 135 is going to feel.
I'm no expert but our lifts are in the same range and I would shoot myself if I did the OHP session you did above. You clearly made 135! It's not like you did one rep at 135 and then your shoulders were so fatigued you had to stop. You did 12 reps right below it, then 12 reps at your "personal best." If I was you it would've gone like this. I would've walked into the gym and said okay today is OHP day and I'm going to work with 135. I'd do some warmup, and the entire time I would visualize myself lifting 1 pl8 overhead. Then I'd head to the rack and do one set at each of the weights you have above until I got to 135, and then rep it out until I can't.