FPE required to knock over IHMSA Silhouette

[moorepower]

As stated above. How many fpe is required to knock over the targets. I am pretty sure that they are the same size as the air venturi silhouette's.  Thanks! There is a local air pistol match coming up, and I am curious. They allow rifles to shoot for fun, so I am taking my 1720T as a carbine at 8fpe, but if warm enough thinking about taking my 10" 1740 at 5 fpe.

[Back_Roads]

 IIR they are supposed to drop with 3 FPE.

[moorepower]

Thanks!