Tubeless Tyres -"saying the same things about tubeless tyres over and over again" Hippy read the first f**king post

I find it difficult getting the "pop" with CO2 canisters

That's unsurprising, as they require a phase change to generate the gas volume. If you could get a very high flow rate out of the top, the bottom would freeze. CO₂ extinguishers use exactly this principle to generate dry ice in the expanding nozzle. Airshot and Flashcharger just rely on adiabatic expansion of pressurised gas, not a phase change.