[arghwhat]

Note that regardless of what you do, a container of fuel (without its own oxidizer) would never successfully light/sustain fire without first having displaced the majority of the fuel with atmospheric air to provide the necessary oxidizer. That’s why you can’t light a full container even with tracer rounds.

Otherwise, you are only be able to light the part of the fuel that leaked into the atmosphere.

[dwohnitmok]

I think people have done experiments with gasoline exposed to open air or with a chamber of air and even then it is quite difficult to ignite, especially if the bullet has nothing to impact against, but travels through the vapor.