It is amazing what you get used to.
At our Blue River Regulators (Nebraska) matches Working Cowboy reloads on every stage. You get a lot of practice reloading in, not to mention fun.
Perhaps one of the reasons Range Detective (2 revolvers and 1 rifle) is the single most popular class shot at our meets.
Like Working Cowboy, you don't need a cart to shoot Range Detective. Carry your ammunition and necessaries in a saddlebag or carpetbag and your rifle in the other hand.
RCJ