Maybe this is a silly question, but does a 190g pierce gas canister last roughly the same time as a 230g threaded gas canister? It's just I'm heading East and know I will be able to get the 190g gas canisters and need to work out how many I'm going to need for the trip.
BTW I have an Edelrid adapter that means I can use the pierce gas bottles with my jetboil.
I think what's worth pointing out here is that the weight refers to the contents, not the gross weight, which I suspect is the reason for the naive question?