Vintage bike options for air?

My only on-the-road source of air is an old Zefal HP. (I think I asked about replacing seals recently.) Today I got a flat, and the lack of air moving ability in that old pump meant the rest of the ride to work was at a more gingerly pace, worried as I was that I'd get a pinch flat.

All I own are vintage steel bikes. I have tried a couple of those mini-pumps and hate them. I will replace the seal in my Zefal, but is there a reasonably effective full size frame pump available which is worth trying? Should I just abandon all hope in pumps and switch to a CO2 inflator? If so, what do people like in that space?