Gun upgrade

[Shamal]

Bloody hell, I've had the gun in my damn sleeping bag.

That's a bit of a slant on the old "Is that a gun in your pocket,or are you just pleased to see me" gag.

"Is that a gun in your sleeping bag or are you REALLY pleased to see me?"

I'm beginning to worry about you??

 

[Sewdhull]

With the same amount of shots through the same gun too?  The first few shots out of a rif on a freezing cold day dribble out of the barrel.  Presumably the hop materials sensitivity to temperature matters.  If you use few shots through a DMR you would not want to rubber to cool too quickly if doing so made it useless after a few minutes.    

Bloody hell, I've had the gun in my damn sleeping bag in winter and its still taken a good burst to wake up the hop the next morning. 

My research indicates the following.

Buckings work because they deform and have more surface to rub on because of it, therefore more time in contact with the BB making the most of the friction, as they get harder they deform less.

The actual coefficient of friction reduces as they warm because of physics, but they deform more as they warm until they are deforming too much, requiring a harder rubber.

Harder rubbers deform less so they can put more force on the BB, needed for heavier BBs.

The choice of bucking Vs the temperature they are used at matters and the gun will keep cooling or heating the rubber as you have observed.

Compressing the air heats it so using the gun heats the insides including the bucking. The barrel will cool it until everything equalises.

Cold or warm bbs may well have a similar effect.

I can't find any info on aeg air temps so the actual temp the bucking operates at is a mystery but being rubber or similar heating or cooling will be localised whatever it is.