My track pump has a guage, and I take my 28mm tyres to 90psi. With a mini pump I struggle to get above 80.
Ive never had the need to borrow air from anyone. I find that a bike pump provides sufficient to continue a ride.

How high can you take Schraeder valves. When I used them, I always seemed to lose that extra bit of pressure in a hiss when I removed the pump.