Temprature Affect Trajectory of BBs?

[Josh Walrus]

In winter, i shot my m24 for practice, and it was still hella accurate...

But i just shot my m24 outside now, its 60 degress out, and the thing was pinpoint accurate or pretty close at about 180 ft, after about 3 shots i picked my head up from the scope and just said outloud to myself "Holy S***, you have to be F***ing kidding me" then proceed to go shoot at everything i wanted, and it was glorious

anyway, both firing seesions were on days with as little wind as possible, and .3 bbs, so what i wondering is, could temprature affect BB trajectory/shot accuracy?

oh and its not the hop-up rubber affected by temp, my m24 doesnt have hop-up

im not really sure its 180 ft, maybe be a miniscule bit more or less, but its freakin far, ill tell you right now a stock aeg couldn't reach what i was hitting unless the shooter arced it, it was crazy...

[21CA-Iceman]

I would think that Barametric pressure and humidity would have the most to do with bb's and accuracy taking into account wind of course. I believe that the bb's used have a water absorption rate of around .1-.25% if sunk in water. Only becouse they are ground, standard ABS is around .2-.45%. On humid days I would say that the water absorption rate in normal shooting conditions on a very humid day would be around .05-1%. Simple put, the bb swells a small amount on a really humid day. We did take some excell .25g bb's and submerse them in water for 24 hours and the bb itself grew by about .0001 - .0002 on average for a lot of 50 samples. The point to all of this is simple relative humidity will affect the bb, but not to a point where you will really notice it. I would just say you are a great shot or really lucky. Either way you win.

[Knief]

It also may not be the bbs trajectory that's being altered directly by the temperature. In warmer temperature, oils thin out more causing less resistance in the piston and cylinder assembly. This would up the velocity some and give you so more range to take advantage of your already accurate rifle.

[Josh Walrus]

thanks for the in depth fast explination guys!

well its very accurate so me thinks im using it in Down Kaliber's skirm today