A firing circuit is an instantaneous step signal. Transmitting it depends on the high-frequency response of everything in the circuit, especially when driving a relay coil through a long cable. Mostly an inconsequential delay, except when back EMF could fry something in the the circuit.
I've been using orange power cords for launch systems for 30 years. Not only is there the resistance of the wire, there's resistance in the connectors (especially when they get dirty). It's common for a direct firing circuit (switch to cord to igniter) to not fire at over 50 feet. It's even worse when the battery gets a little low. The best solution is to put a 12V automotive relay at the pad. The relay coil only requires 100mA instead of 1A or more to fire the igniter. 500 ft is typically ok with this setup. But, you need another battery at the pad (or shared by a bank of pads).
When you get out to HPR distances, the cost of the wiring and the hassle of setup and tear down justified going wireless. No need to get the expensive Wilson system. There are cheaper homemade solutions.