Is it possible

[simesgee]

Is this not a airgunning myth? Remembering vaguely that force = mass x velocity (or similiar) surely the equivlent air pressure that propels a .177 at a given velocity to produce 12 ftlb would propel a heavier projectile at 12 ftlb = a lower velocity. If someone cleverer could explain Id be grateful and how are Beeman getting around this with their dual calibre effort? Cos you canne break the laws of physics (unless it suits the script!)?

It is more efficient to accelerate a large mass by a bit, than to accelerate a small mass by a lot. That is why passenger aircraft engines have this big fan on the front - to suck in a great mass of air and accelerate it a relatively small amount.

As a .22 is greater in mass but leaves with a lower velocity than a .177 the air is used more efficiently.
Hope that helps!
Simes.

[dannyboy8133]

It is more efficient to accelerate a large mass by a bit, than to accelerate a small mass by a lot. That is why passenger aircraft engines have this big fan on the front - to suck in a great mass of air and accelerate it a relatively small amount.

As a .22 is greater in mass but leaves with a lower velocity than a .177 the air is used more efficiently.
Hope that helps!
Simes.

Clever clogs - - so the Beeman in .177 must be way down then. What a pointless rifle then.