Short-Stroke extension

[gtpkeeper]

Short-Stroke extension what does it do for your gun

[T 20]

Short-Stroke extension what does it do for your gun

It extends the piston and so shortens the stroke.

[gtpkeeper]

cheers so less cocking effort

[tinbum]

cheers so less cocking effort

Usually a little higher cocking effort for the same power

[jayboy]

Usually more cocking effort for a quicker lock time when firing. I think for the TX series it puts the swept volume back to what the MK 2 produced when the FAC version was made separately.

[gtpkeeper]

think just get pro tuning kit then

[tinbum]

Chris, your inbox is full

[gtpkeeper]

inbox cleared

[look no hands]

On a certain rifle I did it to, I found it lost so much power that I struggled to get the power back up without having to put a hefty spring in, which then made it horrid to shoot.

Pete

[Shed tuner]

short stroking is best when the gun in question is specified to shoot full power at around 14 ft-lbs+

[gtpkeeper]

short stroking is best when the gun in question is specified to shoot full power at around 14 ft-lbs+

mine will be staying below uk limit ....for now

[Frog]

mine will be staying below uk limit ....for now

What shed tuner meant was a rifle designed to shoot at 14fpe + in those countries where that's allowed. These rifles are detuned for our 12fpe limit and may well be inefficient at our sub 12 fpe power limits. That would include many full sized rifles - TX200 mk3, HW95 etc. Some of those rifles may feel better with a reduced swept volume - one way of achieving that is a short stroke extension.

[gtpkeeper]

soon find out then,if i dont like could always take it i guess

[Shed tuner]

What shed tuner meant was a rifle designed to shoot at 14fpe + in those countries where that's allowed. These rifles are detuned for our 12fpe limit and may well be inefficient at our sub 12 fpe power limits. That would include many full sized rifles - TX200 mk3, HW95 etc. Some of those rifles may feel better with a reduced swept volume - one way of achieving that is a short stroke extension.

exactly

[Joncaddy]

Usually more cocking effort for a quicker lock time when firing. I think to ser the TX series it puts the swept volume back to what the MK 2 produced when the FAC version was made separately.

Excuse my ignorance, but how does adding extra length to the piston by fitting an extended head to it, thereby reducing the swept volume. increase the cocking effort. Surely as the piston merely being pulled backwards by cocking the gun, the cocking effort from being standard shouldn't change? Is there something I'm missing here?