I managed a personal best this week on shoulder press using smiths machine
125K shoulder press for 7 reps
3 warm up sets with bar only thats 35K
1 set of 12 with 75K
1 set of 10 with 115K
1 set of 7 with 125K

I usually press with 46K dumbells as we iant got any heavier used the smiths for a change,and ended up very surprized,not bad for a middle aged bloke of 45