How much air?

[angrybear]

Check your maths

Volume of a cylinder = π x R² x L

3.1416 x 1.3² x 8 = 42.27 cc

That's mine.

I think there's an assumption that air is like a liquid and that the pellet is pushed all the way down the barrel by a consistent volume. That's not the case and it's a highly complex system to do with pressure waves and flow, which aren't the same things.

I agree the comparison with springers and other plants is flawed because of the stored energy of the power plant (Spring/Ram)

26mm x 80mm or as we want it in cc's 2.6 x 8 so - pi x D x L

3.142 x 2.6 = 8.1692 x 8 = 65.3536cc's swept volume

[BTDT]

26mm x 80mm or as we want it in cc's 2.6 x 8 so - pi x D x L

3.142 x 2.6 = 8.1692 x 8 = 65.3536cc's swept volume

3.142 x diameter = circumference. Circumference x length = surface area of the cylinder in square cms.

Try 3.142 x radius x radius x length for volume in cubic cms.

[angrybear]

Yep, You beat me to my correction confusing my circumference of a circle, with my surface area of a circle.

silly old bear