lately due to my ammo shortage as my licence is in for renewal i have been playing with the hw a lot more lately.next step i know is to chrono the airgun but does anybody know if the hw,s are prone to an increase in power due to the heat ?.number 2 is does anybody actually know what power is needed for an 8.44gr pellet to go through both sides of a pellet tin at 20yards ?.crude i know but mine will now go through where as before it did not.will chrono it at the weekend,it was making about 11.2ft/lbs at the last check any bets on what it is at now ?